Google - Who Is The Inventor Of Google

Google  - who is the inventor of google

Google is an American multinational technology company specializing in Internet-related services and products. These include online advertising technologies, search, cloud computing, software, and hardware.

Google was founded in 1996 by Larry Page and Sergey Brin while they were Ph.D. students at Stanford University, in California. Together, they own about 14 percent of its shares and control 56 percent of the stockholder voting power through supervoting stock. They incorporated Google as a privately held company on September 4, 1998. An initial public offering (IPO) took place on August 19, 2004, and Google moved to its new headquarters in Mountain View, California, nicknamed the Googleplex.

In August 2015, Google announced plans to reorganize its various interests as a conglomerate called Alphabet Inc. Google, Alphabet's leading subsidiary, will continue to be the umbrella company for Alphabet's Internet interests. Upon completion of the restructure, Sundar Pichai became CEO of Google, replacing Larry Page, who became CEO of Alphabet.

Rapid growth since incorporation has triggered a chain of products, acquisitions, and partnerships beyond Google's core search engine (Google Search). It offers services designed for work and productivity (Google Docs, Sheets and Slides), email (Gmail/Inbox), scheduling and time management (Google Calendar), cloud storage (Google Drive), social networking (Google+), instant messaging and video chat (Google Allo/Duo/Hangouts), language translation (Google Translate), mapping and turn-by-turn navigation (Google Maps), video sharing (YouTube), notetaking (Google Keep), and photo organizing and editing (Google Photos). The company leads the development of the Android mobile operating system, the Google Chrome web browser, and Chrome OS, a lightweight operating system based on the Chrome browser. Google has moved increasingly into hardware; from 2010 to 2015, it partnered with major electronics manufacturers in the production of its Nexus devices, and in October 2016, it launched multi ple hardware products (including the Google Pixel smartphone, Home smart speaker, Wifi mesh wireless router, and Daydream View virtual reality headset). The new hardware chief, Rick Osterloh, stated: "a lot of the innovation that we want to do now ends up requiring controlling the end-to-end user experience".

Google has also experimented with becoming an Internet network operator. In February 2010, it announced Google Fiber, a fiber-optic infrastructure that was installed in Kansas City; in April 2015, it launched Project Fi, combining Wi-Fi and cellular networks from different providers in an effort to create a seamless and fast wireless Internet experience; and in 2016, the company launched the Google Station initiative to make public "high-quality, secure, easily accessible Wi-Fi" around the world, which had already been deployed in India.

Alexa, a company that monitors commercial web traffic, lists Google.com as the most visited website in the world. Several other Google services also figure in the top 100 most visited websites, including YouTube and Blogger. Google has been the second most valuable brand in the world for 4 consecutive years, and was valued in 2016 at $133 billion. Google has received significant criticism for issues such as privacy, tax avoidance, antitrust, censorship, and search neutrality.

Google's mission statement, from the outset, was "to organize the world's information and make it universally accessible and useful," and its unofficial slogan was "Don't be evil". In October 2015, the motto was replaced in the Alphabet corporate code of conduct by the phrase: "Do the right thing".

Google's commitment to such robust idealism has been increasingly called into doubt due to a number of the firm's actions and behaviours which appear to contradict this.

Google  - who is the inventor of google
History

Google began in January 1996 as a research project by Larry Page and Sergey Brin when they were both PhD students at Stanford University in Stanford, California.

While conventional search engines ranked results by counting how many times the search terms appeared on the page, the two theorized about a better system that analyzed the relationships among websites. They called this new technology PageRank; it determined a website's relevance by the number of pages, and the importance of those pages, that linked back to the original site.

Page and Brin originally nicknamed their new search engine "BackRub", because the system checked backlinks to estimate the importance of a site. Eventually, they changed the name to Google, originating from a misspelling of the word "googol", the number 1 followed by 100 zeros, which was picked to signify that the search engine was intended to provide large quantities of information. Originally, Google ran under Stanford University's website, with the domains google.stanford.edu and z.stanford.edu.

The domain name for Google was registered on September 15, 1997, and the company was incorporated on September 4, 1998. It was based in the garage of a friend (Susan Wojcicki) in Menlo Park, California. Craig Silverstein, a fellow PhD student at Stanford, was hired as the first employee.

Financing, 1998 and initial public offering, 2004

The first funding for Google was an August 1998 contribution of $100,000 from Andy Bechtolsheim, co-founder of Sun Microsystems, given before Google was incorporated. At least three other angel investors invested in 1998: Amazon.com founder Jeff Bezos, Stanford University computer science professor David Cheriton, and entrepreneur Ram Shriram. Author Ken Auletta claims that each (including Bechtolsheim) invested $250,000, but other sources have reported a $100,000 level.

After some additional, small investments through the end of 1998 to early 1999, a new, $25 million round of funding was announced on June 7, 1999, with major investors including the venture capital firms Kleiner Perkins Caufield & Byers and Sequoia Capital.

Early in 1999, Brin and Page decided they wanted to sell Google to Excite. They went to Excite CEO George Bell and offered to sell it to him for $1 million. He rejected the offer. Vinod Khosla, one of Excite's venture capitalists, talked the duo down to $750,000, but Bell still rejected it.

Google's initial public offering (IPO) took place five years later, on August 19, 2004. At that time Larry Page, Sergey Brin, and Eric Schmidt agreed to work together at Google for 20 years, until the year 2024.

At IPO, the company offered 19,605,052 shares at a price of $85 per share. Shares were sold in an online auction format using a system built by Morgan Stanley and Credit Suisse, underwriters for the deal. The sale of $1.67 bn (billion) gave Google a market capitalization of more than $23bn. By January 2014, its market capitalization had grown to $397bn. The vast majority of the 271 million shares remained under the control of Google, and many Google employees became instant paper millionaires. Yahoo!, a competitor of Google's, also benefitted because it owned 8.4 million shares of Google before the IPO took place.

There were concerns that Google's IPO would lead to changes in company culture. Reasons ranged from shareholder pressure for employee benefit reductions to the fact that many company executives would become instant paper millionaires. As a reply to this concern, co-founders Brin and Page promised in a report to potential investors that the IPO would not change the company's culture. In 2005, articles in The New York Times and other sources began suggesting that Google had lost its anti-corporate, no evil philosophy. In an effort to maintain the company's unique culture, Google designated a Chief Culture Officer, who also serves as the Director of Human Resources. The purpose of the Chief Culture Officer is to develop and maintain the culture and work on ways to keep true to the core values that the company was founded on: a flat organization with a collaborative environment. Google has also faced allegations of sexism and ageism from former employees. In 2013, a class actio n against several Silicon Valley companies, including Google, was filed for alleged "no cold call" agreements which restrained the recruitment of high-tech employees.

The stock performed well after the IPO, with shares hitting $350 for the first time on October 31, 2007, primarily because of strong sales and earnings in the online advertising market. The surge in stock price was fueled mainly by individual investors, as opposed to large institutional investors and mutual funds. GOOG shares split into GOOG Class C shares and GOOGL class A shares. The company is listed on the NASDAQ stock exchange under the ticker symbols GOOGL and GOOG, and on the Frankfurt Stock Exchange under the ticker symbol GGQ1. These ticker symbols now refer to Alphabet Inc., Google's holding company, since the fourth quarter of 2015.

Growth

In March 1999, the company moved its offices to Palo Alto, California, which is home to several prominent Silicon Valley technology start-ups. The next year, against Page and Brin's initial opposition toward an advertising-funded search engine, Google began selling advertisements associated with search keywords. In order to maintain an uncluttered page design and increase speed, advertisements were solely text-based. Keywords were sold based on a combination of price bids and click-throughs, with bidding starting at five cents per click.

This model of selling keyword advertising was first pioneered by Goto.com, an Idealab spin-off created by Bill Gross. When the company changed names to Overture Services, it sued Google over alleged infringements of the company's pay-per-click and bidding patents. Overture Services would later be bought by Yahoo! and renamed Yahoo! Search Marketing. The case was then settled out of court; Google agreed to issue shares of common stock to Yahoo! in exchange for a perpetual license.

In 2001, Google received a patent for its PageRank mechanism. The patent was officially assigned to Stanford University and lists Lawrence Page as the inventor. In 2003, after outgrowing two other locations, the company leased an office complex from Silicon Graphics, at 1600 Amphitheatre Parkway in Mountain View, California. The complex became known as the Googleplex, a play on the word googolplex, the number one followed by a googol zeroes. The Googleplex interiors were designed by Clive Wilkinson Architects. Three years later, Google bought the property from SGI for $319 million. By that time, the name "Google" had found its way into everyday language, causing the verb "google" to be added to the Merriam-Webster Collegiate Dictionary and the Oxford English Dictionary, denoted as: "to use the Google search engine to obtain information on the Internet". The first use of "Google" as a verb in pop culture happened on the tV series Buffy the Vampire Slayer, in 2 002.

In 2005, The Washington Post reported on a 700 percent increase in third-quarter profit for Google, largely thanks to large companies shifting their advertising strategies from newspapers, magazines, and television to the Internet.

In January 2008, all the data that passed through Google's MapReduce software component had an aggregated size of 20 petabytes per day.

In 2009, a CNN report about top political searches of 2009 noted that "more than a billion searches" are being typed into Google on a daily basis.

In May 2011, the number of monthly unique visitors to Google surpassed one billion for the first time, an 8.4 percent increase from May 2010 (931 million).

2012 marked the first year that Google generated $50 billion in annual revenue, topping 2011's $38 billion generated. Then-CEO Larry Page commented in January 2013: "We ended 2012 with a strong quarter ... Revenues were up 36% year-on-year, and 8% quarter-on-quarter. And we hit $50 billion in revenues for the first time last year â€" not a bad achievement in just a decade and a half."

2013 onward

Google announced the launch of a new company, called Calico, on September 19, 2013, to be led by Apple, Inc. chairman Arthur Levinson. In the official public statement, Page explained that the "health and well-being" company would focus on "the challenge of ageing and associated diseases".

Google celebrated its 15-year anniversary on September 27, 2013, and in 2016 it celebrated its 18th birthday with an animated Doodle shown on web browsers around the world. although it has used other dates for its official birthday. The reason for the choice of September 27 remains unclear, and a dispute with rival search engine Yahoo! Search in 2005 has been suggested as the cause.

The Alliance for Affordable Internet (A4AI) was launched in October 2013; Google is part of the coalition of public and private organisations that also includes Facebook, Intel, and Microsoft. Led by Sir Tim Berners-Lee, the A4AI seeks to make Internet access more affordable so that access is broadened in the developing world, where only 31% of people are online. Google will help to decrease Internet access prices so they fall below the UN Broadband Commission's worldwide target of 5% of monthly income.

The corporation's consolidated revenue for the third quarter of 2013 was reported in mid-October 2013 as $14.89 billion, a 12 percent increase compared to the previous quarter. Google's Internet business was responsible for $10.8 billion of this total, with an increase in the number of users' clicks on advertisements.

In November 2013, Google announced plans for a new 1-million-sq-ft (93,000 sq m) office in London, which was due to open in 2016. The new premises, able to accommodate 4,500 employees, has been identified as one of the biggest ever commercial property acquisitions in Britain.

According to Interbrand's annual Best Global Brands report, Google has been the second most valuable brand in the world (behind Apple Inc.) in 2013, 2014, 2015, and 2016, with a valuation of $133 billion.

In September 2015, Google engineering manager Rachel Potvin revealed details about Google's software code at an engineering conference. She revealed that the entire Google codebase, which spans every single service it develops, consists of over 2 billion lines of code. All that code is stored on a code repository available to all 25,000 Google engineers, and the code is regularly copied and updated on 10 Google data centers. To keep control, Potvin said Google has built its own "version control system", called "Piper", and that "when you start a new project, you have a wealth of libraries already available to you. Almost everything has already been done." Engineers can make a single code change and deploy it on all services at the same time. The only major exceptions are that the PageRank search results algorithm is stored separately with only specific employee access, and the code for the Android operating system and the Google Chrome browser are also stored separately, as they d on't run on the Internet. The "Piper" system spans 85 TB of data. Google engineers make 25,000 changes to the code each day, and on a weekly basis change approximately 15 million lines of code across 250,000 files. With that much code, automated bots have to help. Potvin reported, "You need to make a concerted effort to maintain code health. And this is not just humans maintaining code health, but robots too.” Bots aren't writing code, but generating a lot of the data and configuration files needed to run the company’s software. "Not only is the size of the repository increasing," Potvin explained, "but the rate of change is also increasing. This is an exponential curve."

As of October 2016, Google operates 70 offices in more than 40 countries.

Alexa, a company that monitors commercial web traffic, lists Google.com as the most visited website in the world. Several other Google services also figure in the top 100 most visited websites, including YouTube and Blogger.

Push into hardware

In April 2016, Recode reported that Google had hired Rick Osterloh, Motorola Mobility's former President, to head Google's new hardware division. Later, in October 2016, The Information reported that David Foster, Amazon.com's former Kindle hardware chief, had joined Google as hardware chief for a new brand of smartphones by Google.

On October 4, 2016, Google held a press event, where it announced its intention to create more hardware. Rick Osterloh stated: "a lot of the innovation that we want to do now ends up requiring controlling the end-to-end user experience", and introduced:

  • The Pixel and Pixel XL smartphones with the Google Assistant, a next-generation contextual voice assistant, built-in.
  • Google Home, an Amazon Echo-like voice assistant placed in the house that can answer voice queries, play music, find information from apps (calendar, weather etc.), and control third-party smart home appliances (users can tell it to turn on the lights, for example).
  • Daydream View virtual reality headset that lets Android users with compatible Daydream-ready smartphones put their phones in the headset and enjoy VR content.
  • Google Wifi, a connected set of Wi-Fi routers to simplify and extend coverage of home Wi-Fi.

Acquisitions and partnerships

Google went through three major periods of acquisitions, spanning 2000â€"2009, 2010â€"2012, and 2014â€"2015.

2000â€"2009

Since 2001, Google has acquired many companies, primarily small venture capital-funded firms. In 2004, Google acquired Keyhole, Inc. The start-up company developed a product called Earth Viewer that gave a three-dimensional view of the Earth. Google renamed the service Google Earth in 2005. Google acquired Urchin Software in April 2005, using their Urchin on Demand product (along with ideas from Adaptive Path's Measure Map) to create Google Analytics in 2006.

In October 2006, Google announced that it had acquired the video-sharing site YouTube for $1.65 billion in Google stock, and the deal was finalized on November 13, 2006. Google does not provide detailed figures for YouTube's running costs, and YouTube's revenues in 2007 were noted as "not material" in a regulatory filing. In May 2008, a Forbes magazine article projected the 2008 YouTube revenue at $200 million, noting progress in advertising sales.

On April 13, 2007, Google reached an agreement to acquire DoubleClick for $3.1 billion, transferring to Google valuable relationships that DoubleClick had with Web publishers and advertising agencies. Later that same year, Google purchased GrandCentral for $50 million. The site would later be renamed Google Voice. On August 5, 2009, Google bought out its first public company, video software maker On2 Technologies, for $106.5 million. Google also acquired Aardvark, a social networking search engine, for $50 million, and commented on its internal blog, "we're looking forward to collaborating to see where we can take it". In April 2010, Google announced it had acquired a hardware startup, Agnilux.

In addition to the many companies Google has purchased, the firm has partnered with other organizations for research, advertising, and other activities. For example, in 2005, Google partnered with NASA Ames Research Center to build 1,000,000 square feet (93,000 m2) of offices. The offices would be used for research projects involving large-scale data management, nanotechnology, distributed computing, and the entrepreneurial space industry.

Google entered into a partnership with Sun Microsystems, in October 2005, to help share and distribute each other's technologies. The company also partnered with AOL to enhance each other's video search services.

Google's 2005 partnerships also included financing the new .mobi top-level domain for mobile devices, along with other companies including Microsoft, Nokia, and Ericsson. Google would later launch "AdSense for Mobile", taking advantage of the emerging mobile advertising market. Further extending its advertising reach, Google and Fox Interactive Media of News Corporation entered into a $900 million agreement to provide search and advertising on the then-popular social networking site MySpace.

In 2007, Google began sponsoring NORAD Tracks Santa, displacing the former sponsor AOL. NORAD Tracks Santa purports to follow Santa Claus' progress on Christmas Eve, using Google Earth to "track Santa" in 3-D for the first time. Google-owned YouTube gave NORAD Tracks Santa its own channel.

In 2008, Google developed a partnership with GeoEye to launch a satellite providing Google with high-resolution (0.41 m monochrome, 1.65 m color) imagery for Google Earth. The satellite was launched from Vandenberg Air Force Base on September 6, 2008. Google also announced in 2008 that it was hosting an archive of Life Magazine's photographs. Some images in the archive were never published in the magazine. The photos were watermarked and originally had copyright notices posted on all photos, regardless of public domain status.

2010â€"2012

In 2010, Google Energy made its first investment in a renewable energy project, putting $38.8 million into two wind farms in North Dakota. The company announced the two locations will generate 169.5 megawatts of power, enough to supply 55,000 homes. The farms, which were developed by NextEra Energy Resources, will reduce fossil fuel use in the region and return profits. NextEra Energy Resources sold Google a twenty-percent stake in the project to get funding for its development. In February 2010, the Federal Energy Regulatory Commission FERC granted Google an authorization to buy and sell energy at market rates. The order specifically states that Google Energyâ€"a subsidiary of Googleâ€"holds the rights "for the sale of energy, capacity, and ancillary services at market-based rates", but acknowledges that neither Google Energy nor its affiliates "own or control any generation or transmission" facilities. The corporation exercised this authorization in September 2013 when it anno unced it would purchase all the electricity produced by the not-yet-built 240-megawatt Happy Hereford wind farm.

Also in 2010, Google purchased Global IP Solutions, a Norway-based company that provides web-based teleconferencing and other related services. This acquisition enabled Google to add telephone-style services to its list of products. On May 27, 2010, Google announced it had also closed the acquisition of the mobile ad network AdMob. This occurred days after the Federal Trade Commission closed its investigation into the purchase. Google acquired the company for an undisclosed amount. In July 2010, Google signed an agreement with an Iowa wind farm to buy 114 megawatts of energy for 20 years.

On April 4, 2011, The Globe and Mail reported that Google bid $900 million for 6000 Nortel Networks patents.

On August 15, 2011, Google made its largest-ever acquisition to-date when it announced that it would acquire Motorola Mobility for $12.5 billion subject to approval from regulators in the United States and Europe. In a post on Google's blog, Google Chief Executive and co-founder Larry Page revealed that the acquisition was a strategic move to strengthen Google's patent portfolio. The company's Android operating system has come under fire in an industry-wide patent battle, as Apple and Microsoft have sued Android device makers such as HTC, Samsung, and Motorola. The merger was completed on May 22, 2012, after the approval of People's Republic of China.

This purchase was made in part to help Google gain Motorola's considerable patent portfolio on mobile phones and wireless technologies, to help protect Google in its ongoing patent disputes with other companies, mainly Apple and Microsoft, and to allow it to continue to freely offer Android. After the acquisition closed, Google began to restructure the Motorola business to fit Google's strategy. On August 13, 2012, Google announced plans to lay off 4000 Motorola Mobility employees. On December 10, 2012, Google sold the manufacturing operations of Motorola Mobility to Flextronics for $75 million. As a part of the agreement, Flextronics will manufacture undisclosed Android and other mobile devices. On December 19, 2012, Google sold the Motorola Home business division of Motorola Mobility to Arris Group for $2.35 billion in a cash-and-stock transaction. As a part of this deal, Google acquired a 15.7% stake in Arris Group valued at $300 million.

On June 5, 2012, Google announced it had acquired Quickoffice, a company widely known for their mobile productivity suite for both iOS and Android. Google plans to integrate Quickoffice's technology into its own product suite.

On February 6, 2013, Google announced it had acquired Channel Intelligence for $125 million. Channel Intelligence, a technology company that helps customers buy products online, is active globally in 31 different countries and works with over 850 retailers. Google will use this technology to enhance its e-commerce business.

The official confirmation of Google's acquisition of the Israel-based startup Waze occurred in June 2013. Waze is promoted as a "community-based traffic and navigation app".

Following the acquisition of Waze, Google submitted a "10-Q" filing with the Securities Exchange Commission (SEC) that revealed that the corporation spent $1.3 billion on acquisitions during the first half of 2013. The filing also revealed that the Waze acquisition cost Google $966 million, instead of the $1.1 billion figure that was initially presented in media sources.

The 2012 acquisition of WIMM Labs, a company that previously made an Android-powered smartwatch, was confirmed in August 2013. As of August 31, 2013, Google has not publicly commented on the news concerning WIMM Labs. The acquisition of Flutter, a creator of hand gesture recognition technology, was confirmed by the corporation in early October 2013. The reported price is $40 million and Google spokesperson stated: "We're really impressed by the Flutter team's ability to design new technology based on cutting-edge research." Flutter's technology allows users to enact hand gestures to control navigation for apps such as iTunes, Windows Media Player, and Winamp.

2014â€"2016

On January 26, 2014, Google Inc. announced it had agreed to acquire DeepMind Technologies, a privately held artificial intelligence company from London. DeepMind describes itself as having the ability to combine the best techniques from machine learning and systems neuroscience to build general-purpose learning algorithms. DeepMind's first commercial applications were used in simulations, e-commerce and games. As of December 2013, it was reported that DeepMind had roughly 75 employees. The technology news website Re/code reported that the company was purchased for $400 million though it was not disclosed where the information came from. A Google spokesman would not comment of the price. The purchase of DeepMind aids in Google's recent growth in the artificial intelligence and robotics community.

On January 29, 2014, Google announced it was selling its Motorola Mobility unit to China-based Lenovo, for $2.91bn. The company kept the extensive patent collection used to develop Android products, considered the most valuable part of the original deal. Nonetheless, the sale price was significantly less than the $12.5 billion Google had bought Motorola Mobility for. The $2.91bn price tag consisted of $660 million in cash, $750 million in Lenovo ordinary shares, and a $1.5 billion 3-year promissory note. In March 2014, Google confirmed it had purchased the remnants of gaming startup, Green Throttle Games, which developed a Bluetooth gaming controller for Android.

In May 2014, Google announced it had purchased Quest Visual, maker of the augmented reality translator app Word Lens. In June 2014, Google purchased satellite imaging firm Skybox Imaging for $500 million. In July 2014, Google purchased the online music service Songza.

On September 10, 2015, Google announced to form strategic partnership with Mobvoi to bring Android Wear to mainland China. In October 2015, Google invested in a China-based artificial intelligence (AI) company, Mobvoi. The funding will enable the Company to further enhance its core AI technologies, and develop new consumer products empowered by AI.

In July 2016, Google announced that it had purchased Moodstocks, a startup which specializes in instant image recognition. In August 2016, Google acquired Orbitera, a startup that developed a platform for buying and selling cloud-based software, for around $100 million.

In October 2016, Google announced it has acquired FameBit, a marketplace that connects video creators with marketers. Also in October 2016, Google acquired eye-tracking startup Eyefluence. Matt Brian of Engadget drew references to Google's Daydream VR platform and Google's effort to create its own VR headsets that need eye-tracking sensors, and that the Eyefluence company, which specializes in turning eye movements into virtual actions, can be helpful in that process.

Google data centers

As of 2016, Google owned and operated nine data centers across the U.S., two in Asia, and four in Europe.

In 2011, the company had announced plans to build three data centers at a cost of more than $200 million in Asia (Singapore, Hong Kong and Taiwan) and said they would be operational within two years. In December 2013, Google announced that it had scrapped the plan to build a data center in Hong Kong.

In October 2013, The Washington Post reported that the U.S. National Security Agency intercepted communications between Google's data centers, as part of a program named MUSCULAR. This wiretapping was made possible because Google did not encrypt data passed inside its own network. Google began encrypting data sent between data centers in 2013.

Google’s most efficient data center runs at 95 °F (35 °C) using only fresh air cooling, requiring no electrically powered air conditioning; the servers run so hot that humans cannot go near them for extended periods.

An August 2011 report estimated that Google had about 900,000 servers in their data centers, based on energy usage. The report does state that "Google never says how many servers are running in its data centers."

In December 2016, Google announced that starting in 2017, it will power all of its data centers, as well as all of its offices, from 100% renewable energy. The commitment will make Google "the world’s largest corporate buyer of renewable power, with commitments reaching 2.6 gigawatts (2,600 megawatts) of wind and solar energy". Google also stated that it does not count that as its final goal; it says that "since the wind doesn’t blow 24 hours a day, we’ll also broaden our purchases to a variety of energy sources that can enable renewable power, every hour of every day". Additionally, the project will "help support communities" around the world, as the purchase commitments will "result in infrastructure investments of more than $3.5 billion globally", and will "generate tens of millions of dollars per year in revenue to local property owners, and tens of millions more to local and national governments in tax revenue".

Alphabet

On August 10, 2015, Google announced plans to reorganize its various interests as a conglomerate called Alphabet. Google, Alphabet's leading subsidiary, will continue to be the umbrella company for Alphabet's Internet interests. Upon completion of the restructure, Sundar Pichai became CEO of Google, replacing Larry Page, who became CEO of Alphabet.

Google  - who is the inventor of google
Products and services

Advertising

For the 2006 fiscal year, the company reported $10.492 billion in total advertising revenues and only $112 million in licensing and other revenues. In 2011, 96% of Google's revenue was derived from its advertising programs. In addition to its own algorithms for understanding search requests, Google uses technology from the company DoubleClick, to project user interest and target advertising to the search context and the user history.

Google Analytics allows website owners to track where and how people use their website, for example by examining click rates for all the links on a page. Google advertisements can be placed on third-party websites in a two-part program. Google's AdWords allows advertisers to display their advertisements in the Google content network, through either a cost-per-click or cost-per-view scheme. The sister service, Google AdSense, allows website owners to display these advertisements on their website and earn money every time ads are clicked.

One of the criticisms of this program is the possibility of click fraud, which occurs when a person or automated script clicks on advertisements without being interested in the product, causing the advertiser to pay money to Google unduly. Industry reports in 2006 claimed that approximately 14 to 20 percent of clicks were fraudulent or invalid.

In February 2003, Google stopped showing the advertisements of Oceana, a non-profit organization protesting a major cruise ship's sewage treatment practices. Google cited its editorial policy at the time, stating "Google does not accept advertising if the ad or site advocates against other individuals, groups, or organizations." The policy was later changed. In June 2008, Google reached an advertising agreement with Yahoo!, which would have allowed Yahoo! to feature Google advertisements on its web pages. The alliance between the two companies was never completely realized because of antitrust concerns by the U.S. Department of Justice. As a result, Google pulled out of the deal in November 2008.

In an attempt to advertise its own products, Google launched a website called Demo Slam, developed to demonstrate technology demos of Google Products.

Search engine

According to market research published by comScore in November 2009, Google Search is the dominant search engine in the United States market, with a market share of 65.6%. Google indexes billions of web pages, so that users can search for the information they desire through the use of keywords and operators.

In 2003, The New York Times complained about Google's indexing, claiming that Google's caching of content on its site infringed its copyright for the content. In this case, the United States District Court of Nevada ruled in favor of Google in Field v. Google and Parker v. Google. The publication 2600: The Hacker Quarterly has compiled a list of words that the web giant's new instant search feature will not search.

Google Watch has criticized Google's PageRank algorithms, saying that they discriminate against new websites and favor established sites. The site has also alleged that there are connections between Google and the National Security Agency (NSA) and the Central Intelligence Agency (CIA).

Google also hosts Google Books. The company began scanning books and uploading limited previews, and full books were allowed, into its new book search engine. The Authors Guild, a group that represents 8,000 U.S. authors, filed a class action suit in a New York City federal court against Google in 2005 over this service. Google replied that it is in compliance with all existing and historical applications of copyright laws regarding books. Google eventually reached a revised settlement in 2009 to limit its scans to books from the U.S., the UK, Australia, and Canada. Furthermore, the Paris Civil Court ruled against Google in late 2009, asking it to remove the works of La Martinière (Éditions du Seuil) from its database. In competition with Amazon.com, Google sells digital versions of new books.

On July 21, 2010, in response to Bing, Google updated its image search to display a streaming sequence of thumbnails that enlarge when pointed at. Though web searches still appear in a batch per page format, on July 23, 2010, dictionary definitions for certain English words began appearing above the linked results for web searches.

The "Hummingbird" update to the Google search engine was announced in September 2013. The update was introduced over the month prior to the announcement and allows users ask the search engine a question in natural language rather than entering keywords into the search box.

In August 2016, Google announced two major changes related to its mobile search results. The first, removing the "mobile-friendly" label that highlighted pages were easy to read on mobile from its mobile search results page. The second, on January 10, 2017, the company will start punishing mobile pages that show intrusive interstitials when a user first opens a page and they will rank lower in its search results.

Enterprise services

G Suite is a monthly subscription offering for organizations and businesses to get access to a collection of Google's services, including Gmail, Google Drive and Docs, Sheets, and Slides, with additional administrative tools, unique domain names, and 24/7 support.

Google Search Appliance was launched in February 2002, targeted toward providing search technology for larger organizations. Google launched the Mini three years later, which was targeted at smaller organizations. Late in 2006, Google began to sell Custom Search Business Edition, providing customers with an advertising-free window into Google.com's index. The service was renamed Google Site Search in 2008.

On March 15, 2016, Google announced the introduction of Google Analytics 360 Suite, "a set of integrated data and marketing analytics products, designed specifically for the needs of enterprise-class marketers." Among other things, the suite is designed to help "enterprise class marketers" "see the complete customer journey", generate "useful insights", and "deliver engaging experiences to the right people". Jack Marshall of The Wall Street Journal wrote that the suite competes with existing marketing cloud offerings by companies including Adobe, Oracle, Salesforce, and IBM.

Consumer services

In 2004, Google launched Gmail, a web-based email service, with a significantly higher storage offer than competitors. Gmail grew to become the world's most popular email service, with over a billion active users in February 2016. Gmail faces significant criticism over privacy, due to its usage of machine scanning of email content, a practice that Google says is necessary of web-based email.

In 2007, reports surfaced that Google was planning the release of its own mobile phone, possibly a competitor to Apple's iPhone. The project, called Android, turned out not to be a phone but an operating system for mobile devices, which Google acquired and then released as an open source project under the Apache 2.0 license. Google provides a software development kit for developers so applications can be created to be run on Android-based phones. In September 2008, T-Mobile released the G1, the first Android-based phone.

Google released the seventh major version of the Android operating system in August 2016. Android is the world's most widely used operating system, with over 1.4 billion active users in September 2015. However, Android's platform fragmentation (millions of devices from hundreds of manufacturers who each design their own version of Android) means that the operating system suffers significant issues with security vulnerabilities due to a lack of updates and support.

In January 2010, Google released Nexus One, the first Android phone under its own, "Nexus", brand. It spawned a number of phones and tablets under the "Nexus" branding, which some referred to as "high-quality low-cost" devices. The Nexus line was discontinued and replaced by a new brand, called Pixel, in 2016.

In September 2008, Google introduced the Google Chrome web browser in beta testing status. The Chrome browser is the world's most widely used web browser across all platforms as of October 2016.

Following the launch of the Chrome browser in 2008, Google introduced Chrome OS in 2009, described as a new, open-source, lightweight operating system based entirely around the browser, and targeted at netbooks.

In 2011, the Chromebook was introduced, described as a "new kind of computer" running Chrome OS, with the first Chromebooks coming from Samsung and Acer.

In April 2012, Google launched Google Drive, a cloud storage service with 15 GB free storage space and paid plans up to 30 TB available.

Google Docs, Sheets and Slides are a web-based word processor, spreadsheet and presentation program, respectively, that form the Google Docs suite. Docs originated from a Silicon Valley startup that was acquired by Google in 2006. The suite was integrated into Google Drive when Drive launched in 2012.

In July 2013, Google introduced the Chromecast dongle, that allows users to stream YouTube and Netflix videos via smartphones.

In June 2014, Google announced Google Cardboard, a simple cardboard viewer that lets user place their smartphone in a special front compartment to view virtual reality (VR) media.

In May 2016, Google announced Google Daydream, an advanced VR platform built directly into the seventh major version of its Android mobile operating system.

Internet services

In February 2010, Google announced the Google Fiber project, with experimental plans to build an ultra-high-speed broadband network for 50,000 to 500,000 customers in one or more American cities.

In March 2011, Google announced that Kansas City, Kansas would be the first community where the new network would be deployed.

Following Google's corporate restructure to make Alphabet Inc. its parent company, Google Fiber was moved to Alphabet's Access division.

In April 2015, Google announced Project Fi, a mobile virtual network operator, that combines Wi-Fi and cellular networks from different telecommunication providers to enable seamless connectivity and fast Internet signal.

In September 2016, Google began expanding its Google Station initiative, which was previously a project for public Wi-Fi at railway stations in India. Caesar Sengupta, VP for Google’s next billion users, told The Verge that 15,000 people get online for the first time thanks to Google Station and that 3.5 million people use the service every month. The expansion meant that Google was looking for partners around the world to further develop the initiative, which promised "high-quality, secure, easily accessible Wi-Fi".

Other products

Google Translate is a server-side machine translation service, which can translate between 80 different languages. For some languages, handwriting recognition, or speech recognition can be used as input, and translated text can be pronounced through speech synthesis. The software uses corpus linguistics techniques, where the program "learns" from professionally translated documents, specifically UN and European Parliament proceedings.

Google launched its Google News service in 2002, an automated service which summarizes news articles from various websites. In March 2005, Agence France Presse (AFP) sued Google for copyright infringement in federal court in the District of Columbia, a case which Google settled for an undisclosed amount in a pact that included a license of the full text of AFP articles for use on Google News.

In August 2016, a mysterious code post on GitHub revealed that Google was developing a new operating system called "Fuchsia". No official announcement was made, but the code suggests it's a universal OS capable of running on all types of devices, "everything from dash infotainment systems for cars, to embedded devices like traffic lights and digital watches, all the way up to smartphones, tablets, and PCs."

In May 2011, Google announced Google Wallet, a mobile application for wireless payments.

In late June 2011, Google launched a social networking service called Google+.

In 2013, Google launched Google Shopping Express, a delivery service initially available only in San Francisco and Silicon Valley.

Google Alerts is a content change detection and notification service, offered by the search engine company Google. The service sends emails to the user when it finds new resultsâ€"such as web pages, newspaper articles, or blogsâ€"that match the user's search term.

In July 2015 Google released DeepDream, an image recognition software capable of creating psychedelic images using a convolutional neural network.

In December 2016, Google released Trusted Contacts, a personal safety mobile application for Android.

Google introduced its Family Link service in March 2017, letting parents buy Android Nougat-based Android devices for kids under 13 years of age and create a Google account through the app, with the parents controlling the apps installed, monitor the time spent using the device, and setting a "Bedtime" feature that remotely locks the device.

APIs

Google APIs are a set of application programming interfaces (APIs) developed by Google which allow communication with Google Services and their integration to other services. Examples of these include Search, Gmail, Translate or Google Maps. Third-party apps can use these APIs to take advantage of or extend the functionality of the existing services.

Other websites

Google Developers is Google's site for software development tools, APIs, and technical resources. The site contains documentation on using Google developer tools and APIsâ€"including discussion groups and blogs for developers using Google's developer products.

Google Labs was a page created by Google to demonstrate and test new projects.

Google owns the top-level domain 1e100.net which is used for some servers within Google's network. The name is a reference to the scientific E notation representation for 1 googol, 1E100 = 1 × 10100.

Google  - who is the inventor of google
Corporate affairs and culture

On Fortune magazine's list of the best companies to work for, Google ranked first in 2007, 2008 and 2012 and fourth in 2009 and 2010. Google was also nominated in 2010 to be the world's most attractive employer to graduating students in the Universum Communications talent attraction index. Google's corporate philosophy includes principles such as "you can make money without doing evil," "you can be serious without a suit," and "work should be challenging and the challenge should be fun."

Employees

As of 2013, Google had 47,756 employees (in the fourth quarter, including the Motorola subsidiary), among them more than 10,000 software developers based in more than 40 offices.

After the company's IPO in 2004, founders Sergey Brin and Larry Page and CEO Eric Schmidt requested that their base salary be cut to $1. Subsequent offers by the company to increase their salaries were turned down, primarily because their main compensation continues to come from owning stock in Google. Before 2004, Schmidt made $250,000 per year, and Page and Brin each received an annual salary of $150,000.

In 2007 and early 2008, several top executives left Google. In October 2007, former chief financial officer of YouTube Gideon Yu joined Facebook along with Benjamin Ling, a high-ranking engineer. In March 2008, Sheryl Sandberg, then vice-president of global online sales and operations, began her position as chief operating officer of Facebook. At the same time, Ash ElDifrawi, formerly head of brand advertising, left to become chief marketing officer of Netshops. On April 4, 2011, Larry Page became CEO and Eric Schmidt became Executive Chairman of Google. In July 2012, Google's first female employee, Marissa Mayer, left Google to become Yahoo!'s CEO.

As a motivation technique, Google uses a policy often called Innovation Time Off, where Google engineers are encouraged to spend 20% of their work time on projects that interest them. Some of Google's newer services, such as Gmail, Google News, Orkut, and AdSense originated from these independent endeavors. In a talk at Stanford University, Marissa Mayer, Google's Vice President of Search Products and User Experience until July 2012, showed that half of all new product launches in the second half of 2005 had originated from the Innovation Time Off.

Office locations and headquarters

Mountain View

Google's headquarters in Mountain View, California, is referred to as "the Googleplex", a play on words on the number googolplex and the headquarters itself being a complex of buildings. The lobby is decorated with a piano, lava lamps, old server clusters, and a projection of search queries on the wall. The hallways are full of exercise balls and bicycles. Many employees have access to the corporate recreation center. Recreational amenities are scattered throughout the campus and include a workout room with weights and rowing machines, locker rooms, washers and dryers, a massage room, assorted video games, table football, a baby grand piano, a billiard table, and ping pong. In addition to the recreation room, there are snack rooms stocked with various foods and drinks, with special emphasis placed on nutrition. Free food is available to employees 24/7, with the offerings provided by paid vending machines prorated based on and favoring those of better nutritional value.

Google's extensive amenities are not available to all of its workers. Temporary workers such as book scanners do not have access to shuttles, Google cafes, or other perks.

New York City

In 2006, Google moved into 311,000 square feet (28,900 m2) of office space in New York City, at 111 Eighth Avenue in Manhattan. The office was specially designed and built for Google and houses its largest advertising sales team, which has been instrumental in securing large partnerships. The New York headquarters is similar in design and functionality to its Mountain View headquarters, and includes a game room, micro kitchens, and a video game area. As of February 2012, a significant engineering team is based in New York City.

Other U.S. cities

By late 2006, Google established a new headquarters for its AdWords division in Ann Arbor, Michigan. In November 2006, Google opened offices on Carnegie Mellon's campus in Pittsburgh, focusing on shopping-related advertisement coding and smartphone applications and programs. Other office locations in the U.S. include Atlanta, Georgia; Austin, Texas; Boulder, Colorado; Cambridge, Massachusetts; San Francisco, California; Seattle, Washington; Reston, Virginia, and Washington, D.C.

In October 2006, the company announced plans to install thousands of solar panels to provide up to 1.6 megawatts of electricity, enough to satisfy approximately 30% of the campus' energy needs. The system will be the largest solar power system constructed on a U.S. corporate campus and one of the largest on any corporate site in the world. In addition, Google announced in 2009 that it was deploying herds of goats to keep grassland around the Googleplex short, helping to prevent the threat from seasonal bush fires while also reducing the carbon footprint of mowing the extensive grounds. The idea of trimming lawns using goats originated from Bob Widlar, an engineer who worked for National Semiconductor. In 2008, Google faced accusations in Harper's Magazine of being an "energy glutton". The company was accused of employing its "Don't be evil" motto and its public energy-saving campaigns to cover up or make up for the massive amounts of energy its servers require.

On May 12, 2015, Google announced the setting up of its largest campus outside the United States in Hyderabad, India. The proposed campus can accommodate 6500 employees.

International locations

Internationally, Google has over 70 offices outside the US, the majority of which are local corporate offices and data centers. Google also has regional business and sales headquarters including in Dublin (for Europe) and Singapore (for Asia-Pacific).

Google also has product research and development operations in cities around the world, namely Sydney (main development location of Google Maps) and London (part of Android development), as well as numerous others including Zurich, Munich, Tokyo, Tel Aviv and Hyderabad.

Doodles

Since 1998, Google has been designing special, temporary alternate logos to place on their homepage intended to celebrate holidays, events, achievements and people. The first Google Doodle was in honor of the Burning Man Festival of 1998. The doodle was designed by Larry Page and Sergey Brin to notify users of their absence in case the servers crashed. Subsequent Google Doodles were designed by an outside contractor, until Larry and Sergey asked then-intern Dennis Hwang to design a logo for Bastille Day in 2000. From that point onward, Doodles have been organized and created by a team of employees termed "Doodlers".

Easter eggs and April Fools' Day jokes

Google has a tradition of creating April Fools' Day jokes. On April 1, 2000, Google MentalPlex allegedly featured the use of mental power to search the web. In 2007, Google announced a free Internet service called TiSP, or Toilet Internet Service Provider, where one obtained a connection by flushing one end of a fiber-optic cable down their toilet. Also in 2007, Google's Gmail page displayed an announcement for Gmail Paper, allowing users to have email messages printed and shipped to them. In 2008, Google announced Gmail Custom time where users could change the time that the email was sent.

In 2010, Google changed its company name to Topeka in honor of Topeka, Kansas, whose mayor changed the city's name to Google for a short amount of time in an attempt to sway Google's decision in its new Google Fiber Project. In 2011, Google announced Gmail Motion, an interactive way of controlling Gmail and the computer with body movements via the user's webcam.

Google's services contain easter eggs, such as the Swedish Chef's "Bork bork bork," Pig Latin, "Hacker" or leetspeak, Elmer Fudd, Pirate, and Klingon as language selections for its search engine. The search engine calculator provides the Answer to the Ultimate Question of Life, the Universe, and Everything from Douglas Adams' The Hitchhiker's Guide to the Galaxy. When searching the word "recursion", the spell-checker's result for the properly spelled word is exactly the same word, creating a recursive link.

When searching for the word "anagram," meaning a rearrangement of letters from one word to form other valid words, Google's suggestion feature displays "Did you mean: nag a ram?" In Google Maps, searching for directions between places separated by large bodies of water, such as Los Angeles and Tokyo, results in instructions to "kayak across the Pacific Ocean." During FIFA World Cup 2010, search queries including "World Cup" and "FIFA" caused the "Goooo...gle" page indicator at the bottom of every result page to read "Goooo...al!" instead.

atGoogleTalks

AtGoogleTalks is a series of presentations by invited speakers sponsored by Google given at various Google offices throughout the world. The series has feature categories such as Authors@Google, Candidates@Google, Women@Google, Musicians@Google and others. For technical topics, there is Google Tech Talks (also known as EngEDU) which is dedicated to exploring areas of technology and science. Guest speakers range from present and past world leaders to little-known poets and artists. Talks range from about 40 to 70 minutes. As of February 2009, there had been over 1700 guest speakers.

CodeF

Google CodeF is a career event and mentoring program organized by Google for female undergraduate computer scientists who have foundational coding skills in at least one of C++, Java or Python. It lasts 12 weeks and consists of eight mentoring meetings held in Google's offices and virtually. The initiative aims to develop female computer scientists and increase the number of women working in the technology industry.

Philanthropy

In 2004, Google formed the not-for-profit philanthropic Google.org, with a start-up fund of $1 billion. The mission of the organization is to create awareness about climate change, global public health, and global poverty. One of its first projects was to develop a viable plug-in hybrid electric vehicle that can attain 100 miles per gallon. Google hired Larry Brilliant as the program's executive director in 2004, and the current director is Megan Smith.

In 2008, Google announced its "project 10100" which accepted ideas for how to help the community and then allowed Google users to vote on their favorites. After two years of silence, during which many wondered what had happened to the program, Google revealed the winners of the project, giving a total of ten million dollars to various ideas ranging from non-profit organizations that promote education to a website that intends to make all legal documents public and online.

In 2011, Google donated 1 million euros to International Mathematical Olympiad to support the next five annual International Mathematical Olympiads (2011â€"2015). On July 2012, Google launched a "Legalize Love" campaign in support of gay rights.

Tax avoidance

Google uses various tax avoidance strategies. Out of the five largest American technology companies, it pays the lowest taxes to the countries of origin of its revenues. The company accomplishes this partly by licensing technology through shell subsidiaries in tax havens such as Ireland, Bermuda, the Bahamas, and the Netherlands. This has reportedly sparked a French investigation into Google's transfer pricing practices.

Following criticism of the amount of corporate taxes that Google paid in the United Kingdom, Chairman Eric Schmidt said, "It's called capitalism. We are proudly capitalistic." During the same December 2012 interview, Schmidt "confirmed that the company had no intention of paying more to the UK exchequer." In 2013, Schmidt responded to questions about taxes paid in the UK by pointing to the advertising fees Google charged UK companies as a source of economic growth.

Google Vice President Matt Brittin testified to the Public Accounts Committee of the UK House of Commons that his UK sales team made no sales and hence owed no sales taxes to the UK. In January 2016, Google reached a settlement with the UK to pay £130m in back taxes plus higher taxes in future.

Environment

Since 2007, Google has aimed for carbon neutrality in regard to its operations.

Google disclosed in September 2011 that it "continuously uses enough electricity to power 200,000 homes", almost 260 million watts or about a quarter of the output of a nuclear power plant. Total carbon emissions for 2010 were just under 1.5 million metric tons, most due to fossil fuels that provide electricity for the data centers. Google said that 25 percent of its energy was supplied by renewable fuels in 2010. An average search uses only 0.3 watt-hours of electricity, so all global searches are only 12.5 million watts or 5% of the total electricity consumption by Google.

In 2007, Google launched a project centered on developing renewable energy, titled the "Renewable Energy Cheaper than Coal (RE<C)" project. However, the project was cancelled in 2014, after engineers Ross Koningstein and David Fork understood, after years of study, that "best-case scenario, which was based on our most optimistic forecasts for renewable energy, would still result in severe climate change", writing that they "came to the conclusion that even if Google and others had led the way toward a wholesale adoption of renewable energy, that switch would not have resulted in significant reductions of carbon dioxide emissions".

In June 2013, The Washington Post reported that Google had donated $50,000 to the Competitive Enterprise Institute, a libertarian think tank that calls human carbon emissions a positive factor in the environment and argues that global warming is not a concern.

In July 2013, it was reported that Google had hosted a fundraising event for Oklahoma Senator Jim Inhofe, who has called climate change a "hoax". In 2014 Google cut ties with the American Legislative Exchange Council (ALEC) after pressure from the Sierra Club, major unions and Google's own scientists because of ALEC's stance on climate change and opposition to renewable energy.

Lobbying

In 2013, Google ranked 5th in lobbying spending, up from 213th in 2003. In 2012, the company ranked 2nd in campaign donations of technology and Internet sections.

Litigation

Google has been involved in a number of lawsuits including the High-Tech Employee Antitrust Litigation which resulted in Google being one of four companies to pay a $415 million settlement to employees.

Google  - who is the inventor of google
Criticism and controversy

Google's market dominance has led to prominent media coverage, including criticism of the company over issues such as aggressive tax avoidance, search neutrality, copyright, censorship of search results and content, and privacy. Other criticisms include alleged misuse and manipulation of search results, its use of others' intellectual property, concerns that its compilation of data may violate people's privacy, and the energy consumption of its servers, as well as concerns over traditional business issues such as monopoly, restraint of trade, anti-competitive practices, and patent infringement.

Google's stated mission "to organize the world's information and make it universally accessible and useful", and the means employed to accomplish it, have raised concerns among the company's critics. Much of the criticism pertains to issues that have not yet been addressed by cyber law.

Following media reports about PRISM, NSA's massive electronic surveillance program, in June 2013, several technology companies were identified as participants, including Google. According to leaks of said program, Google joined the PRISM program in 2009.

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Category:Women Inventors - Woman Inventors

Category:Women inventors  - woman inventors
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Autodesk Inventor - Inventor Cam

Autodesk Inventor  - inventor cam

Autodesk Inventor, developed by U.S. based software company Autodesk, is a computer-aided design application for creating 3D digital prototypes used in the design, visualization and simulation of products. It uses ShapeManager, their proprietary geometric modeling kernel.

Autodesk Inventor competes directly with SolidWorks and Solid Edge.

Autodesk Inventor  - inventor cam
Editions

The latest Autodesk Inventor product line includes the following software titles:

  • Autodesk Inventor 2017
  • Autodesk Inventor Professional 2017
  • Autodesk Fusion 360
  • Autodesk Product Design Suite 2017 Premium
  • Autodesk Product Design Suite 2017 Ultimate
  • Autodesk Factory Design Suite 2017 Premium
  • Autodesk Factory Design Suite 2017 Ultimate
  • Autodesk Building Design Suite 2017 Ultimate
  • Autodesk Plant Design Suite 2017 Ultimate

Autodesk Inventor  - inventor cam
Articles and reviews

Find reviews and articles about Inventor on the Autodesk website.

The code names of early releases were the names of sports cars and SUVs, because of the love that division vice president Robert "Buzz" Kross has for high-performance vehicles.

Autodesk Inventor  - inventor cam
Release dates and names

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Autodesk Inventor - Autodesk Inventor Vs Solidworks

Autodesk Inventor  - autodesk inventor vs solidworks

Autodesk Inventor, developed by U.S. based software company Autodesk, is a computer-aided design application for creating 3D digital prototypes used in the design, visualization and simulation of products. It uses ShapeManager, their proprietary geometric modeling kernel.

Autodesk Inventor competes directly with SolidWorks and Solid Edge.

Autodesk Inventor  - autodesk inventor vs solidworks
Editions

The latest Autodesk Inventor product line includes the following software titles:

  • Autodesk Inventor 2017
  • Autodesk Inventor Professional 2017
  • Autodesk Fusion 360
  • Autodesk Product Design Suite 2017 Premium
  • Autodesk Product Design Suite 2017 Ultimate
  • Autodesk Factory Design Suite 2017 Premium
  • Autodesk Factory Design Suite 2017 Ultimate
  • Autodesk Building Design Suite 2017 Ultimate
  • Autodesk Plant Design Suite 2017 Ultimate

Autodesk Inventor  - autodesk inventor vs solidworks
Articles and reviews

Find reviews and articles about Inventor on the Autodesk website.

The code names of early releases were the names of sports cars and SUVs, because of the love that division vice president Robert "Buzz" Kross has for high-performance vehicles.

Autodesk Inventor  - autodesk inventor vs solidworks
Release dates and names

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Nikola Tesla - Inventor Of Alternating Current

Nikola Tesla  - inventor of alternating current

Nikola Tesla (Serbian Cyrillic: Никола Тесла; 10 July 1856 â€" 7 January 1943) was a Serbian-American inventor, electrical engineer, mechanical engineer, physicist, and futurist who is best known for his contributions to the design of the modern alternating current (AC) electricity supply system.

Born and raised in the Austrian Empire, Tesla received an advanced education in engineering and physics in the 1870s and gained practical experience in the early 1880s working in telephony and at Continental Edison in the new electric power industry. He immigrated to the United States in 1884, where he would become a naturalized citizen. He worked for a short time at the Edison Machine Works in New York City before he struck out on his own. With the help of partners to finance and market his ideas, Tesla set up laboratories and companies in New York to develop a range of electrical and mechanical devices. His alternating current (AC) induction motor and related polyphase AC patents, licensed by Westinghouse Electric in 1888, earned him a considerable amount of money and became the cornerstone of the polyphase system which that company would eventually market.

Attempting to develop inventions he could patent and market, Tesla conducted a range of experiments with mechanical oscillators/generators, electrical discharge tubes, and early X-ray imaging. He also built a wireless-controlled boat, one of the first ever exhibited. Tesla became well known as an inventor and would demonstrate his achievements to celebrities and wealthy patrons at his lab, and was noted for his showmanship at public lectures.

Throughout the 1890s, Tesla would pursue his ideas for wireless lighting and worldwide wireless electric power distribution in his high-voltage, high-frequency power experiments in New York and Colorado Springs. In 1893, he made pronouncements on the possibility of wireless communication with his devices. Tesla tried to put these ideas to practical use in his unfinished Wardenclyffe Tower project, an intercontinental wireless communication and power transmitter, but ran out of funding before he could complete it.

After Wardenclyffe, Tesla went on to try and develop a series of inventions in the 1910s and 1920s with varying degrees of success. Having spent most of his money, he lived in a series of New York hotels, leaving behind unpaid bills. The nature of his earlier work and the pronouncements he made to the press later in life earned him the reputation of an archetypal "mad scientist" in American popular culture. Tesla died in New York City in January 1943. His work fell into relative obscurity following his death, but in 1960, the General Conference on Weights and Measures named the SI unit of magnetic flux density the tesla in his honor. There has been a resurgence in popular interest in Tesla since the 1990s.

Nikola Tesla  - inventor of alternating current
Early years

Tesla was born on 10 July [O.S. 28 June] 1856 into a Serb family in the village of Smiljan, Austrian Empire (modern-day Croatia). His father, Milutin Tesla (1819â€"1879), was an Orthodox priest. Tesla's mother, Đuka Tesla (née Mandić; 1822â€"1892), whose father was also an Orthodox priest, had a talent for making home craft tools and mechanical appliances and the ability to memorize Serbian epic poems. Đuka had never received a formal education. Tesla credited his eidetic memory and creative abilities to his mother's genetics and influence. Tesla's progenitors were from western Serbia, near Montenegro.

Tesla was the fourth of five children. He had an older brother, Dane, and three sisters, Milka, Angelina and Marica. Dane was killed in a horse-riding accident when Tesla was aged five. In 1861 Tesla attended primary school in Smiljan, where he studied German, arithmetic, and religion. In 1862 the Tesla family moved to Gospić, Austrian Empire, where Tesla's father worked as parish priest. Nikola completed primary school, followed by middle school.

In 1870 Tesla moved to Karlovac to attend school at the Higher Real Gymnasium. The classes were held in German, as it was a school within the Austro-Hungarian Military Frontier.

Tesla would later write that he became interested in demonstrations of electricity by his physics professor. Tesla noted that these demonstrations of this "mysterious phenomena" made him want "to know more of this wonderful force". Tesla was able to perform integral calculus in his head, which prompted his teachers to believe that he was cheating. He finished a four-year term in three years, graduating in 1873.

In 1873 Tesla returned to his birth town, Smiljan. Shortly after he arrived Tesla contracted cholera; he was bedridden for nine months and was near death multiple times. Tesla's father, in a moment of despair, promised to send him to the best engineering school if he recovered from the illness (his father had originally wanted him to enter the priesthood).

In 1874 Tesla evaded conscription into the Austro-Hungarian Army in Smiljan by running away to Tomingaj, near Gračac. There he explored the mountains wearing hunter's garb. Tesla said that this contact with nature made him stronger, both physically and mentally. He read many books while in Tomingaj and later said that Mark Twain's works had helped him to miraculously recover from his earlier illness.

In 1875 Tesla enrolled at Austrian Polytechnic in Graz, Austria, on a Military Frontier scholarship. During his first year, Tesla never missed a lecture, earned the highest grades possible, passed nine exams (nearly twice as many as required), started a Serb culture club, and even received a letter of commendation from the dean of the technical faculty to his father, which stated, "Your son is a star of first rank." During his second year, Tesla came into conflict with Professor Poeschl over the Gramme dynamo, when Tesla suggested that commutators were not necessary.

Tesla claimed that he worked from 3 a.m. to 11 p.m., no Sundays or holidays excepted. He was "mortified when [his] father made light of [those] hard won honors." After his father's death in 1879, Tesla found a package of letters from his professors to his father, warning that unless he were removed from the school, Tesla would die through overwork. At the end of his second year, Tesla lost his scholarship and became addicted to gambling. During his third year, Tesla gambled away his allowance and his tuition money, later gambling back his initial losses and returning the balance to his family. Tesla said that he "conquered [his] passion then and there," but later in the US he was again known to play billiards. When examination time came, Tesla was unprepared and asked for an extension to study, but was denied. He never graduated from the university and did not receive grades for the last semester.

In December 1878 Tesla left Graz and severed all relations with his family to hide the fact that he dropped out of school. His friends thought that he had drowned in the Mur River. Tesla went to Maribor (now in Slovenia), where he worked as a draftsman for 60 florins a month. He spent his spare time playing cards with local men on the streets. In March 1879, Milutin Tesla went to Maribor to beg his son to return home, but Nikola refused. Nikola suffered a nervous breakdown at around the same time.

On 24 March 1879 Tesla was returned to Gospić under police guard for not having a residence permit. On 17 April 1879, Milutin Tesla died at the age of 60 after contracting an unspecified illness (although some sources say that he died of a stroke). During that year, Tesla taught a large class of students in his old school, Higher Real Gymnasium, in Gospić.

In January 1880 two of Tesla's uncles put together enough money to help him leave Gospić for Prague, where he was to study. He arrived too late to enroll at Charles-Ferdinand University; he had never studied Greek, a required subject; and he was illiterate in Czech, another required subject. Tesla did, however, attend lectures at the university, as an auditor (he did not receive grades for the courses).

In 1881 Tesla moved to Budapest to work under Tivadar Puskás at a telegraph company, the Budapest Telephone Exchange. Upon arrival, Tesla realized that the company, then under construction, was not functional, so he worked as a draftsman in the Central Telegraph Office instead. Within a few months, the Budapest Telephone Exchange became functional, and Tesla was allocated the chief electrician position. During his employment, Tesla made many improvements to the Central Station equipment and claimed to have perfected a telephone repeater or amplifier, which was never patented nor publicly described.

Nikola Tesla  - inventor of alternating current
Working at Edison

In 1882 Tivadar Puskás got Tesla another job in Paris with the Continental Edison Company. Tesla began working in what was then a brand new industry, installing indoor incandescent lighting citywide in the form of an electric power utility. The company had several subdivisions and Tesla worked at the Société Electrique Edison, the division in the Ivry-sur-Seine suburb of Paris in charge of installing the lighting system. There he gained a great deal of practical experience in electrical engineering. Management took notice of his advanced knowledge in engineering and physics and soon had him designing and building improved versions of generating dynamos and motors. They also sent him on to trouble-shoot engineering problems at other Edison utilities being built around France and in Germany.

A move to the US

In 1884 Edison manager Charles Batchelor, who had been overseeing the Paris instillation, was brought back to the US to manage the Edison Machine Works, a manufacturing division situated in New York City, and asked that Tesla be brought to the US as well. In June 1884, Tesla emigrated to the United States. He began working almost immediately at the Machine Works on Manhattan's Lower East Side, an overcrowded shop with a workforce of several hundred machinists, laborers, managing staff, and 20 "field engineers" struggling with the task of building the large electric utility in that city. As in Paris, Tesla was working on troubleshooting installations and improving generators. Historian W. Bernard Carlson notes Tesla may have met company founder, Thomas Alva Edison, only a couple of times. One of those times was noted in Tesla's autobiography where, after staying up all night repairing the damaged dynamos on the ocean liner SS Oregon, he ran into Batchelor and Edison who made a quip about their "Parisian" being out all night. After Tesla told them he had been up all night fixing the Oregon Edison commented to Batchelor that "this is a damned good man." One of the projects given to Tesla was to develop an arc lamp based street lighting system. Arc lighting was the most popular type of street lighting but it required high voltages and was incompatible with the Edison low voltage incandescent system, causing the company to lose contracts in cities that wanted street lighting as well. Tesla's designs were never put into production, maybe because of technical improvements in incandescent street lighting and an installation deal that was cut with an arc lighting company.

Tesla had been working at the Machine Works for a total of sixth months when he quit. What event precipitated him leaving was unclear. It may have been over a bonus he did not receive, either for redesigning generators or for the arc lighting system that got shelved. Tesla had previous run-ins with the Edison company over unpaid bonuses he believed he had earned. In his own biography Tesla stated the manager of the Edison Machine Works offered a $50,000 bonus to design "twenty-four different types of standard machines" "but it turned out to be a practical joke" Later versions of this story have Thomas Edison himself offering and then reneging on the deal quipping "Tesla, you don't understand our American humor." The size of the bonus in either story has been noted as odd since Machine Works manager Batchelor was stingy with pay and the company did not have that sort of cash (equivalent to $12 million today) on hand. Tesla's diary contains just one comment on what happened at the e nd of his employment, a note he scrawled across the two pages covering December 7, 1884 to January 4, 1885 saying "Good by to the Edison Machine Works".

Nikola Tesla  - inventor of alternating current
Tesla Electric Light & Manufacturing

Soon after leaving the Edison company Tesla was working on patenting an arc lighting system, possibly the same one he had developed at Edison. In March 1885 he meet with patent attorney Lemuel W. Serrell, the same attorney used by Edison, to obtain help with submitting the patents. Serrell introduced Tesla to two businessmen, Robert Lane and Benjamin Vail, who agreed to finance an arc lighting manufacturing and utility company in Tesla's name, the Tesla Electric Light & Manufacturing. Tesla worked for the rest of the year obtaining the patents that included an improved DC generator, the first patents issued to Tesla in the US, and building and installing the system in Rahway, New Jersey Tesla's new system gained notice in the technical press, who commented on its advanced features.

The investors showed little interest in Tesla's ideas for new types of alternating current motors and electrical transmission equipment. After the utility was up and running in 1886 they decided that the manufacturing side of the business was too competitive and opted to simply run an electric utility. They formed a new utility company, abandoning Tesla's company and leaving the inventor penniless. Tesla even lost control of the patents he had generated, since he had assigned them to the company in exchange for stock. He had to work at various electrical repair jobs and as a ditch digger for $2 per day. Later in life Tesla would recount that part 1886 as a time of hardship, writing "My high education in various branches of science, mechanics and literature seemed to me like a mockery".

Nikola Tesla  - inventor of alternating current
AC and the induction motor

In late 1886, Tesla met Alfred S. Brown, a Western Union superintendent, and New York attorney Charles F. Peck. The two men were experienced in setting up companies and promoting inventions and patents for financial gain. Based on Tesla's new idea's for electrical equipment, including a thermo-magnetic motor idea, they agreed to back the inventor financially and handle his patents. Together they formed the Tesla Electric Company in April 1887, with an agreement that profits from generated patents would go 1/3 to Tesla, 1/3 to Peck and Brown, and 1/3 to fund development. They set up a laboratory for Tesla at 89 Liberty Street in Manhattan, where he worked on improving and developing new types of electric motors, generators, and other devices.

In 1887 Tesla developed an induction motor that ran on alternating current, a power system format that was rapidly expanding in Europe and the United States because of its advantages in long-distance, high-voltage transmission. The motor used polyphase current, which generated a rotating magnetic field to turn the motor (a principle that Tesla claimed to have conceived in 1882). This innovative electric motor patented in May 1888 was a simple self-starting design that did not need a commutator, thus avoiding sparking and the high maintenance of constantly servicing and replacing mechanical brushes.

Along with getting the motor patented, Peck and Brown arranged to get the motor publicized, starting with independent testing to verify it was a functional improvement, followed by press releases sent to technical publications for articles to run concurrent with the issue of the patent. Physicist William Arnold Anthony (who tested the motor) and Electrical World magazine editor Thomas Commerford Martin arranged for Tesla to demonstrate his alternating current motor on 16 May 1888 at the American Institute of Electrical Engineers. Engineers working for the Westinghouse Electric & Manufacturing Company reported to George Westinghouse that Tesla had a viable AC motor and related power system â€" something Westinghouse needed for the alternating current system he was already marketing. Westinghouse looked into getting a patent on a similar commutator-less, rotating magnetic field-based induction motor developed in 1885 and presented in a paper in March 1888 by Italian physi cist Galileo Ferraris, but decided that Tesla's patent would probably control the market.

In July 1888, Brown and Peck negotiated a licensing deal with George Westinghouse for Tesla's polyphase induction motor and transformer designs for $60,000 in cash and stock and a royalty of $2.50 per AC horsepower produced by each motor. Westinghouse also hired Tesla for one year for the large fee of $2,000 ($53,300 in today's dollars) per month to be a consultant at the Westinghouse Electric & Manufacturing Company's Pittsburgh labs.

During that year Tesla worked in Pittsburgh, helping to create an alternating current system to power the city's streetcars. He found it a frustrating period because of conflicts with the other Westinghouse engineers over how best to implement AC power. Between them, they settled on a 60-cycle AC current system that Tesla proposed (to match the working frequency of Tesla's motor), but they soon found that it would not work for streetcars, since Tesla's induction motor could run only at a constant speed. They ended up using a DC traction motor instead.

Market turmoil

Tesla's demonstration of his induction motor and Westinghouse's subsequent licensing of the patent, both in 1888 came at the time of extreme competition between electric companies. The three big firms, Westinghouse, Edison, and Thompson-Houston, were trying to grow in a capital intensive business while financially undercutting each other. There was even a "War of Currents" propaganda campaign going on with Edison Electric trying to claim their direct current system was better and safer than the Westinghouse alternating current system. Competing in this market meant Westinghouse would not have the cash or engineering resources to develop Tesla's motor and the related polyphase system right away.

Two years after signing the Tesla contract Westinghouse Electric was in trouble. The near collapse of Barings Bank in London triggered the financial panic of 1890, causing investors to call in their loans to W.E. The sudden cash shortage forced the company to refinance its debts. The new lenders demanded that Westinghouse cut back on what looked like excessive spending on acquisition of other companies, research, and patents, including the per motor royalty in the Tesla contract. At that point the Tesla induction motor had been unsuccessful and was stuck in development. Westinghouse was paying a $15,000 a year guaranteed royalty even though operating examples of the motor were rare and polyphase power systems needed to run it were even rarer. In early 1891, George Westinghouse explained his financial difficulties to Tesla in stark terms, saying that, if he did not meet the demands of his lenders, he would no longer be in control of Westinghouse Electric and Tesla w ould have to "deal with the bankers" to try to collect future royalties. The advantages of having Westinghouse continue to champion the motor probably seemed obvious to Tesla and he agreed to release the company from the royalty payment clause in the contract. 6 years later Westinghouse would purchase Tesla's patent for a lump sum payment of $216,000 as part of a patent sharing agreement signed with General Electric (a company created from the 1892 merger of Edison, and Thompson-Houston).

Nikola Tesla  - inventor of alternating current
New York laboratories

The money Tesla made from licensing his AC patents made him independently wealthy and gave him the time and funds to pursue his own interests. In 1889 Tesla moved out of the Liberty Street shop Peck and Brown had rented and for the next dozen years would work out of a series of workshop/laboratory spaces in Manhattan. These included a lab at 175 Grand Street (1889â€"1892), the fourth floor of 33â€"35 South Fifth Avenue (1892â€"1895), and sixth and seventh floors of 46 & 48 East Houston Street (1895â€"1902). Tesla and his hired staff would conduct some of his most significant work in these workshops.

Tesla coil

In the summer of 1889 Tesla traveled to the 1889 Exposition Universelle in Paris and learned of Heinrich Hertz' 1886â€"88 experiments that proved the existence of electromagnetic radiation, including radio waves. Tesla found this new discovery "refreshing" and decided to explore it more fully. In repeating and then expanding on these experiments, Tesla tried powering a Ruhmkorff coil with a high speed alternator he had been developing as part of an improved arc lighting system but found that the high frequency current overheated the iron core and melted the insulation between the primary and secondary windings in the coil. To fix this problem Tesla came up with his Tesla coil with an air gap instead of insulating material between the primary and secondary windings and an iron core that could be moved to different positions in or out of the coil.

Citizenship

On 30 July 1891, aged 35, Tesla became a naturalized citizen of the United States. In the same year, he patented his Tesla coil.

Wireless lighting

After 1890 Tesla experimented with transmitting power by inductive and capacitive coupling using high AC voltages generated with his Tesla coil. He attempted to develop a wireless lighting system based on near-field inductive and capacitive coupling and conducted a series of public demonstrations where he lit Geissler tubes and even incandescent light bulbs from across a stage. He would spend most of the decade working on variations of this new form of lighting with the help of various investors but none of the ventures succeeded in to making a commercial product out of his findings.

In 1893 at St. Louis, Missouri, the Franklin Institute in Philadelphia, Pennsylvania, and the National Electric Light Association Tesla told onlookers that he was sure a system like his could eventually conduct "intelligible signals or perhaps even power to any distance without the use of wires" by conducting it through the Earth.

Tesla served as a vice-president of the American Institute of Electrical Engineers from 1892 to 1894, the forerunner of the modern-day IEEE (along with the Institute of Radio Engineers).

Steam-powered oscillating generator

Trying to come up with a better way to generate alternating current, Tesla developed a steam powered reciprocating electricity generator. He patented it in 1893 and introduced it at the Chicago World's Columbian Exposition that year. Steam would be forced into the oscillator and rush out through a series of ports, pushing a piston up and down that was attached to an armature. The magnetic armature vibrated up and down at high speed, producing an alternating magnetic field. This induced alternating electric current in the wire coils located adjacent. It did away with the complicated parts of a steam engine/generator, but never caught on as a feasible engineering solution to generate electricity.

Polyphase System and the Columbian Exposition

At the beginning of 1893, Westinghouse engineer Benjamin Lamme had made great progress developing an efficient version of Tesla's induction motor, and Westinghouse Electric started branding their complete polyphase AC system as the "Tesla Polyphase System". They believed that Tesla's patents gave them patent priority over other AC systems.

Westinghouse Electric asked Tesla to participate in the 1893 World's Columbian Exposition in Chicago where the company had a large space in a building devoted to electrical exhibits. Westinghouse Electric won the bid to light the Exposition with alternating current and it was a key event in the history of AC power, as the company demonstrated to the American public the safety, reliability, and efficiency of a fully integrated alternating current system. Tesla showed a series of electrical effects related to alternating current as well as his wireless lighting system, using a demonstration he had previously performed throughout America and Europe; these included using high-voltage, high-frequency alternating current to light a wireless gas-discharge lamp.

An observer noted:

Within the room were suspended two hard-rubber plates covered with tin foil. These were about fifteen feet apart, and served as terminals of the wires leading from the transformers. When the current was turned on, the lamps or tubes, which had no wires connected to them, but lay on a table between the suspended plates, or which might be held in the hand in almost any part of the room, were made luminous. These were the same experiments and the same apparatus shown by Tesla in London about two years previous, "where they produced so much wonder and astonishment".

Tesla also explained the principles of the rotating magnetic field in an induction motor by demonstrating how to make a copper egg stand on end, using a device that he constructed known as the Egg of Columbus and introduced his new steam powered oscillator AC generator.

Consulting on Niagara

In 1893 Edward Dean Adams, who headed up the Niagara Falls Cataract Construction Company, sought Tesla's opinion on what system would be best to transmit power generated at the falls. Over several years, there had been a series of proposals and open competitions on how best to use power generated by the falls. Among the systems proposed by several US and European companies were two-phase and three-phase AC, high-voltage DC, and compressed air. Adams pumped Tesla for information about the current state of all the competing systems. Tesla advised Adams that a two-phased system would be the most reliable, and that there was a Westinghouse system to light incandescent bulbs using two-phase alternating current. The company awarded a contract to Westinghouse Electric for building a two-phase AC generating system at the Niagara Falls, based on Tesla's advice and Westinghouse's demonstration at the Columbian Exposition that they could build a complete AC system. At the same time a further contract was awarded to General Electric to build the AC distribution system.

The Nikola Tesla Company

In 1895 Edward Dean Adams, impressed with what he saw when he toured Tesla's lab, agreed to help found the Nikola Tesla Company, set up to fund, develop, and market a variety of previous Tesla patents and inventions as well as new ones. Alfred Brown signed on, bringing along patents developed under Peck and Brown. The board was filled out with William Birch Rankine and Charles F. Coaney. It found few investors, the mid-1890s was a tough time financially, and the wireless lighting and oscillators patents it was set up to market never panned out. The company would handle Tesla's patents for decades to come.

The fire

In the early morning hours of March 13, 1895 the South Fifth Avenue building that housed Tesla's lab caught fire. It started in the basement of the building and was so intense Tesla's 4th floor lab burned and collapsed into the second floor. The fire not only set back Tesla's ongoing projects, it destroyed a collection of early notes and research material, models, and demonstration pieces, including many that had been exhibited at the 1893 Worlds Colombian Exposition. Tesla told The New York Times "I am in too much grief to talk. What can I say?" After the fire Tesla moved to 46 & 48 East Houston Street and rebuilt his lab on the 6th and 7th floors.

X-ray experimentation

Starting in 1894, Tesla began investigating what he referred to as radiant energy of "invisible" kinds after he had noticed damaged film in his laboratory in previous experiments (later identified as "Roentgen rays" or "X-Rays"). His early experiments were with Crookes tubes, a cold cathode electrical discharge tube. Tesla may have inadvertently captured an X-ray imageâ€"predating, by a few weeks, Wilhelm Röntgen's December 1895 announcement of the discovery of x-raysâ€"when he tried to photograph Mark Twain illuminated by a Geissler tube, an earlier type of gas discharge tube. The only thing captured in the image was the metal locking screw on the camera lens.

In March 1896, after hearing of Wilhelm Röntgen's discovery of X-ray and X-ray imaging (radiography), Tesla proceeded to do his own experiments in X-ray imaging, developing a high energy single terminal vacuum tube of his own design that had no target electrode and that worked from the output of the Tesla Coil (the modern term for the phenomenon produced by this device is bremsstrahlung or braking radiation). In his research, Tesla devised several experimental setups to produce X-rays. Tesla held that, with his circuits, the "instrument will ... enable one to generate Roentgen rays of much greater power than obtainable with ordinary apparatus."

Tesla noted the hazards of working with his circuit and single-node X-ray-producing devices. In his many notes on the early investigation of this phenomenon, he attributed the skin damage to various causes. He believed early on that damage to the skin was not caused by the Roentgen rays, but by the ozone generated in contact with the skin, and to a lesser extent, by nitrous acid. Tesla incorrectly believed that X-rays were longitudinal waves, such as those produced in waves in plasmas. These plasma waves can occur in force-free magnetic fields.

On 11 July 1934 the New York Herald Tribune published an article on Tesla, in which he recalled an event that would occasionally take place while experimenting with his single-electrode vacuum tubes; a minute particle would break off the cathode, pass out of the tube, and physically strike him:

Tesla said he could feel a sharp stinging pain where it entered his body, and again at the place where it passed out. In comparing these particles with the bits of metal projected by his "electric gun," Tesla said, "The particles in the beam of force ... will travel much faster than such particles ... and they will travel in concentrations."

Radio remote control

In 1898 Tesla demonstrated a boat that used a coherer based radio controlâ€"which he dubbed "teleautomaton"â€"to the public during an electrical exhibition at Madison Square Garden. The crowd that witnessed the demonstration made outrageous claims about the workings of the boat, such as magic, telepathy, and being piloted by a trained monkey hidden inside. Tesla tried to sell his idea to the U.S. military as a type of radio-controlled torpedo, but they showed little interest. Remote radio control remained a novelty until World War I and afterward, when a number of countries used it in military programs. Tesla took the opportunity to further demonstrate "Teleautomatics" in an address to a meeting of the Commercial Club in Chicago, while he was travelling to Colorado Springs, on 13 May 1899.

Nikola Tesla  - inventor of alternating current
Wireless power

From the 1890s through 1906 Tesla spent a great deal of his time and fortune on a series of projects trying to develop the transmission of electrical power without wires. It was an expansion of his idea of using coils to transmit power he had been demonstrating in wireless lighting. He could see this as not only a way to transmit large amounts of power around the world but also, as he had pointed out in his earlier lectures, a way to transmit worldwide communications.

At the time Tesla was formulating his ideas there was no feasible way to wirelessly transmit communication signals over long distances, let alone large amounts of power. Tesla had studied radio waves early on, at the time called "Hertzian waves" after their discovery by Hertz, and come to the conclusion that the theory on them was incorrect. Also this new form of radiation was widely considered at the time to be a short distance phenomenon that seemed to die out in less than a mile. Tesla noted that even if theories on radio waves were true, they were totally worthless for his intended purposes since this form of "invisible light" would diminish over distance just like any other radiation and would travel in straight lines right out into space becoming "hopelessly lost".

By the mid 1890s Tesla was working on the idea that he might be able to conduct electricity long distance through the Earth or the atmosphere and began working on experiments to test this idea including setting up a large resonance transformer magnifying transmitter in his East Houston Street lab. Seeming to borrow from a common idea at the time that the Earths atmosphere was conductive, he proposed a system composed of balloons suspending transmitting and receiving electrodes in the air above 30,000 feet (9,100 m) in altitude, where he thought the lower pressure would allow him to send high voltages (millions of volts) long distances.

Colorado Springs

To further study the conductive nature of low pressure air Tesla set up an experimental station at high altitude in Colorado Springs during 1899. There he could safely operate much larger coils than in the cramped confines of his New York lab and an associate had made an arrangement for the El Paso Power Company to supply alternating current free of charge. To fund his experiments he convinced John Jacob Astor IV to invest $100,000 to become a majority share holder in the Nikola Tesla Company. Astor thought he was primarily investing in the new wireless lighting system. Instead, Tesla used the money to fund his Colorado Springs experiments. Upon his arrival, he told reporters that he planned to conduct wireless telegraphy experiments, transmitting signals from Pikes Peak to Paris.

There he conducted experiments with a large coil operating in the megavolts range, producing artificial lightning (and thunder) consisting of millions of volts and up to 135 feet (41 m) long discharges and, at one point, inadvertently burned out the generator in El Paso, causing a power outage. The observations he made of the electronic noise of lightning strikes, led him to (incorrectly) conclude that he could use the entire globe of the Earth to conduct electrical energy.

During his time at his laboratory Tesla observed unusual signals from his receiver which he concluded may be communications from another planet. He mentioned them in a letter to a reporter in December 1899 and to the Red Cross Society in December 1900 Reporters treated it as a sensational story and jumped to the conclusion Tesla was hearing signals from Mars. He expanded on the signals he heard in a 9 February 1901 Collier's Weekly article "Talking With Planets" where he said it had not been immediately apparent to him that he was hearing "intelligently controlled signals" and that the signals could come from Mars, Venus, or other planets. It has been hypothesized that he may have intercepted Guglielmo Marconi's European experiments in July 1899â€"Marconi may have transmitted the letter S (dot/dot/dot) in a naval demonstration, the same three impulses that Tesla hinted at hearing in Coloradoâ€"or signals from another experimenter in wireless transmission.

Tesla had an agreement with the editor of The Century Magazine to produce an article on his findings. The magazine sent a photographer to Colorado to photograph the work being done there. The article, titled "The Problem of Increasing Human Energy", appeared in the June, 1900 edition of the magazine. He explained the superiority of the wireless system he envisioned but the article was more of a lengthy philosophical treatise than an understandable scientific description of his work illustrated with what were to become iconic images of Tesla and his Colorado Springs experiments.

Wardenclyffe

Tesla made the rounds in New York trying to find investors for what he thought would be a viable system of wireless transmission, wining and dining them at the Waldorf-Astoria's Palm Garden (the hotel where he was living at the time), The Players Club and Delmonico's. In March, 1901 he obtained $150,000 ($4,318,200 in today's dollars) from J. Pierpont Morgan in return for a 51% share of any generated wireless patents and began planning the Wardenclyffe Tower facility to be built in Shoreham, New York, 100 miles (161 km) east of the city on the North Shore of Long Island.

By July 1901 Tesla had expanded his plans to build a more powerful transmitter to leap ahead of Marconi's radio based system, which Tesla thought was a copy of his system. He approached Morgan to ask for more money to build the larger system but Morgan refused to supply any further funds. In December 1901 Marconi successfully transmitted the letter S from England to Newfoundland, defeating Tesla in the race to be first to complete such a transmission. A month after Marconi's success Tesla tried to get Morgan to back an even larger plan to transmit messages and power by controlling "vibrations throughout the globe". Over the next five years, Tesla wrote more than 50 letters to Morgan, pleading for and demanding additional funding to complete the construction of Wardenclyffe. Tesla continued the project for another nine months into 1902. The tower was erected to its full 187 feet (57 m). In June 1902 Tesla moved his lab operations from Houston Street to Wardenclyffe .

Investors on Wall Street were putting their money into Marconi's system and some in the press began turning against Tesla's project, claiming it was a hoax The project came to a halt in 1905 and in 1906 the financial problems and other events may have led to what Tesla biographer Marc J. Seifer suspects was a nervous breakdown on Tesla's part. Tesla mortgaged the Wardenclyffe property to cover his debts at the Waldorf-Astoria, which eventually mounted to $20,000 ($478,200 in today's dollars). He lost the property in foreclosure in 1915 and in 1917 the Tower was demolished by the new owner to make the land a more viable real estate asset.

Nikola Tesla  - inventor of alternating current
Later years

After Wardencyiffe closed, Tesla continued to write Morgan; after "the great man" died, Tesla wrote his son Jack Morgan, trying to get further funding for the project. In 1906 he opened offices at 165 Broadway in Manhattan, trying to raise further funds by developing and marketing his patents. He went on to have offices at the Metropolitan Life Tower from 1910 to 1914; rented for a few months at the Woolworth Building, moving out because he could not afford the rent; and then to office space at 8 West 40th Street from 1915 to 1925. After moving to 8 West 40th Street, he was effectively bankrupt. Most of his patents had run out and he was having trouble with the new inventions he was trying to develop.

Bladeless turbine

On his 50th birthday, in 1906, Tesla demonstrated a 200 horsepower (150 kilowatts) 16,000 rpm bladeless turbine. During 1910â€"1911 at the Waterside Power Station in New York, several of his bladeless turbine engines were tested at 100â€"5,000 hp. Tesla worked with several companies including the period 1919â€"1922 working in Milwaukee for Allis-Chalmers. He spent most of his time trying to perfect the Tesla turbine with Hans Dahlstrand, the head engineer at the company but engineering difficulties meant it was never made into a practical device. Tesla did license the idea to a precision instrument company and it found use in the form of luxury car speedometers and other instruments.

Wireless lawsuits

When World War One broke out the British cut the transatlantic telegraph cable linking the US to Germany in order to control the flow of information between the two countries. They also tried to shut off German wireless communication to and from the US by having the US Marconi Company sue the German radio company Telefunken for patent infringement. Telefunken brought in the physicist Jonathan Zenneck and Karl Ferdinand Braun for their defense and hired Tesla as a witness for two years for $1000 a month. The case stalled and then went moot when the US entered the war against Germany in 1917.

In 1915 Tesla attempted to sue the Marconi Company for infringement of his wireless tuning patents. Marconi's initial radio patent had been awarded in the US in 1897 but his 1900 patent submission covering improvements to radio transmission had been rejected several times, before it was finally approved in 1904, on the grounds that it infringed on other existing patents including two 1897 Tesla wireless power tuning patents. Tesla's 1915 case went nowhere but in a related case, where the Marconi Company tried to sue the US government over WWI patent infringements, a Supreme Court of the United States 1943 decision restored the prior patents of Oliver Lodge, John Stone, and Tesla. The court declared that their decision had no bearing on Marconi's claim as the first to achieve radio transmission, just that since Marconi's claim to certain patented improvements were questionable, the company could not claim infringement on those same patents

Nobel Prize rumors

On 6 November 1915 a Reuters news agency report from London had the 1915 Nobel Prize in Physics awarded to Thomas Edison and Nikola Tesla; however, on 15 November, a Reuters story from Stockholm stated the prize that year was being awarded to Sir William Henry Bragg and William Lawrence Bragg "for their services in the analysis of crystal structure by means of X-rays." There were unsubstantiated rumors at the time that Tesla and/or Edison had refused the prize. The Nobel Foundation said, "Any rumor that a person has not been given a Nobel Prize because he has made known his intention to refuse the reward is ridiculous"; a recipient could only decline a Nobel Prize after he is announced a winner.

There have been subsequent claims by Tesla biographers that Edison and Tesla were the original recipients and that neither was given the award because of their animosity toward each other; that each sought to minimize the other's achievements and right to win the award; that both refused ever to accept the award if the other received it first; that both rejected any possibility of sharing it; and even that a wealthy Edison refused it to keep Tesla from getting the $20,000 prize money.

In the years after these rumors, neither Tesla nor Edison won the prize (although Edison did receive one of 38 possible bids in 1915 and Tesla did receive one of 38 possible bids in 1937). Despite not winning the Nobel prize, Tesla won an extensive amount of medals and awards, many posthumously. They include:

  • Order of St. Sava, II Class, Government of Serbia (1892)
  • Elliott Cresson Medal (1894)
  • Order of Prince Danilo I (1895)
  • Edison Medal (1916)
  • Order of St. Sava, I Class, Government of Yugoslavia (1926)
  • Order of the Yugoslav Crown (1931)
  • John Scott Medal (1934)
  • Order of the White Eagle, I Class, Government of Yugoslavia (1936)
  • Order of the White Lion, I Class, Government of Czechoslovakia (1937)
  • University of Paris Medal (1937)
  • The Medal of the University St. Clement of Ochrida, Sofia, Bulgaria (1939)

Other ideas, awards, and patents

Tesla theorized that the application of electricity to the brain enhanced intelligence. In 1912, he crafted "a plan to make dull students bright by saturating them unconsciously with electricity," wiring the walls of a schoolroom and, "saturating [the schoolroom] with infinitesimal electric waves vibrating at high frequency. The whole room will thus, Mr. Tesla claims, be converted into a health-giving and stimulating electromagnetic field or 'bath.'" The plan was at least provisionally approved by then superintendent of New York City schools, William H. Maxwell.

Before World War I Tesla sought overseas investors. After the war started, Tesla lost the funding he was receiving from his patents in European countries.

In 1917 Tesla received AIEE's highest honor, the Edison Medal.

In the August 1917 edition of the magazine Electrical Experimenter Tesla postulated that electricity could be used to locate submarines via using the reflection of an "electric ray" of "tremendous frequency," with the signal being viewed on a fluorescent screen (a system that has been noted to have a superficial resemblance to modern radar). Tesla was incorrect in his assumption that high frequency radio waves would penetrate water. But Émile Girardeau, who helped develop France's first radar system in the 1930s, noted in 1953 that Tesla's general speculation that a very strong high-frequency signal would be needed was correct. Girardeau said, "(Tesla) was prophesying or dreaming, since he had at his disposal no means of carrying them out, but one must add that if he was dreaming, at least he was dreaming correctly."

In 1928 Tesla received his last patent, U.S. Patent 1,655,114, for a biplane capable of taking off vertically (VTOL aircraft) and then be "gradually tilted through manipulation of the elevator devices" in flight until it was flying like a conventional plane. Tesla thought the plane would sell for less than $1,000, although the aircraft has been described as impractical.

At this time Tesla closed his last office at 350 Madison Ave., which he had moved into two years earlier.

Living circumstances

Since 1900 Tesla had been living at the Waldorf Astoria in New York running up a large bill. In 1922 he moved to St. Regis Hotel and would follow a pattern from then on of moving to a new hotel every few years leaving behind unpaid bills.

Tesla would walk to the park every day to feed the pigeons. He took to feeding them at the window of his hotel room and bringing the injured ones in to nurse back to health. He said that he had been visited by a specific injured white pigeon daily. Tesla spent over $2,000, including building a device that comfortably supported her so her bones could heal, to fix her broken wing and leg. Tesla stated:

I have been feeding pigeons, thousands of them for years. But there was one, a beautiful bird, pure white with light grey tips on its wings; that one was different. It was a female. I had only to wish and call her and she would come flying to me. I loved that pigeon as a man loves a woman, and she loved me. As long as I had her, there was a purpose to my life.

Tesla's unpaid bills and complaints about the mess from his pigeon feeding forced him to leave the St. Regis in 1923, the Hotel Pennsylvania in 1930, and the Hotel Governor Clinton in 1934. At one point he also took out rooms at the Hotel Marguery.

In 1934 Tesla moved to the Hotel New Yorker and Westinghouse Electric & Manufacturing Company began paying him $125 per month as well as paying his rent, expenses the Company would pay for the rest of Tesla's life. Accounts on how this came about vary. Several sources say Westinghouse was worried about (or warned about) potential bad publicity surrounding the impoverished conditions their former star inventor was living under. It has been described as being couched in the form of a "consulting fee" to get around Tesla's aversion to accept charity, or by one biographer (Marc Seifer), as a type of unspecified settlement.

Birthday press conferences

In 1931, Kenneth Swezey, a young writer who had been associated with Tesla for some time, organized a celebration for the inventor's 75th birthday. Tesla received congratulatory letters from more than 70 pioneers in science and engineering, including Albert Einstein, and he was also featured on the cover of Time magazine. The cover caption "All the world's his power house" noted his contribution to electrical power generation. The party went so well Tesla made it an annual event, an occasion where he would put out a large spread of food and drink (featuring dishes of his own creation) and invite the press to see his inventions, hear a stories about past exploits, views on current events, or sometimes odd or baffling claims.

At the 1932 occasion Tesla claimed he had invented a motor that would run on cosmic rays. In 1933 at age 77 Tesla told reporters that, after thirty-five years of work, he was on the verge of producing proof of a new form of energy. He claimed it was a theory of energy that was “violently opposed” to Einsteinian physics, and could be tapped with an apparatus that would be cheap to run and last 500 years. He also told reporters he was working on a way to transmit individualized private radio wavelengths, working on breakthroughs in metallurgy, and developing a way to photograph the retina to record thought.

At the 1934 party, Tesla told reporters he had designed a super weapon he claimed would end all war. He would call it "teleforce" but is was usually referred to it as his death ray. Tesla described it as a defensive weapon that would be put up along the border of a country to be used against attacking ground-based infantry or aircraft. Tesla never revealed detailed plans of how the weapon worked during his lifetime but in 1984 they surfaced at the Nikola Tesla Museum archive in Belgrade. The treatise, The New Art of Projecting Concentrated Non-dispersive Energy through the Natural Media, described an open-ended vacuum tube with a gas jet seal that allows particles to exit, a method of charging slugs of tungsten or mercury to millions of volts, and directing them in streams (through electrostatic repulsion). Tesla tried to interest the US War Department, the United Kingdom, the Soviet Union, and Yugoslavia in the device.

In 1935 at his 79th birthday party Tesla covered many topics. He claimed to have discovered the cosmic ray in 1896, invented a way to produce direct current by induction, and made many claims regarding his mechanical oscillator. Describing the device (which he expected would earn him $100,000,000 within two years) he told reporters that a version of his oscillator caused an earthquake in his 46 East Houston Street lab and neighboring streets in downtown New York City in 1898. He went on to tell reporters his oscillator could destroy the Empire State Building with 5 lbs of air pressure. He also explained a new technique he developed using his oscillators he called "Telegeodynamics", using it transmit vibrations into the ground that he claimed would work over any distance to be used for communication or locating underground mineral deposits.

At his 1937 celebration in the Grand Ballroom of Hotel New Yorker Tesla received the "Order of the White Lion" from the Czechoslovakia ambassador and a medal from the Yugoslavian ambassador. On questions concerning the death ray, Tesla stated, "But it is not an experiment ... I have built, demonstrated and used it. Only a little time will pass before I can give it to the world."

In the fall of 1937, after midnight one night, Tesla left the Hotel New Yorker to make his regular commute to the cathedral and the library to feed the pigeons. While crossing a street a couple of blocks from the hotel, Tesla was unable to dodge a moving taxicab and was thrown to the ground. Tesla's back was severely wrenched and three of his ribs were broken in the accident. The full extent of his injuries were never known; Tesla refused to consult a doctor â€" an almost lifelong custom, and he never fully recovered.

Nikola Tesla  - inventor of alternating current
Death

On 7 January 1943, at the age of 86, Tesla died alone in Room 3327 of the New Yorker Hotel. His body was later found by maid Alice Monaghan after she had entered Tesla's room, ignoring the "do not disturb" sign that Tesla had placed on his door two days earlier. Assistant medical examiner H.W. Wembly examined the body and ruled that the cause of death had been coronary thrombosis.

Two days later the Federal Bureau of Investigation ordered the Alien Property Custodian to seize Tesla's belongings, even though Tesla was an American citizen. John G. Trump, a professor at M.I.T. and a well-known electrical engineer serving as a technical aide to the National Defense Research Committee, was called in to analyze the Tesla items, which were being held in custody. After a three-day investigation, Trump's report concluded that there was nothing which would constitute a hazard in unfriendly hands, stating:

[Tesla's] thoughts and efforts during at least the past 15 years were primarily of a speculative, philosophical, and somewhat promotional character often concerned with the production and wireless transmission of power; but did not include new, sound, workable principles or methods for realizing such results.

In a box purported to contain a part of Tesla's "death ray", Trump found a 45-year-old multidecade resistance box.

On 10 January 1943 New York City mayor Fiorello La Guardia read a eulogy written by Slovene-American author Louis Adamic live over the WNYC radio while violin pieces "Ave Maria" and "Tamo daleko" were played in the background. On 12 January, two thousand people attended a state funeral for Tesla at the Cathedral of Saint John the Divine. After the funeral, Tesla's body was taken to the Ferncliff Cemetery in Ardsley, New York, where it was later cremated. The following day, a second service was conducted by prominent priests in the Trinity Chapel (today's Serbian Orthodox Cathedral of Saint Sava) in New York City.

Estate

In 1952, following pressure from Tesla's nephew, Sava Kosanović, Tesla's entire estate was shipped to Belgrade in 80 trunks marked N.T. In 1957, Kosanović's secretary Charlotte Muzar transported Tesla's ashes from the United States to Belgrade. The ashes are displayed in a gold-plated sphere on a marble pedestal in the Nikola Tesla Museum.

Nikola Tesla  - inventor of alternating current
Patents

Tesla obtained around 300 patents worldwide for his inventions. Some of Tesla's patents are not accounted for, and various sources have discovered some that have lain hidden in patent archives. There are a minimum of 278 known patents issued to Tesla in 26 countries. Many of Tesla's patents were in the United States, Britain, and Canada, but many other patents were approved in countries around the globe. Many inventions developed by Tesla were not put into patent protection.

Personal life

Tesla worked every day from 9:00 a.m. until 6:00 p.m. or later, with dinner from exactly 8:10 p.m., at Delmonico's restaurant and later the Waldorf-Astoria Hotel. Tesla would telephone his dinner order to the headwaiter, who also could be the only one to serve him. "The meal was required to be ready at eight o'clock ... He dined alone, except on the rare occasions when he would give a dinner to a group to meet his social obligations. Tesla would then resume his work, often until 3:00 a.m."

For exercise, Tesla walked between 8 and 10 miles (13 and 16 km) per day. He curled his toes one hundred times for each foot every night, saying that it stimulated his brain cells.

In an interview with newspaper editor Arthur Brisbane, Tesla said that he did not believe in telepathy, stating, "Suppose I made up my mind to murder you," he said, "In a second you would know it. Now, isn't that wonderful? By what process does the mind get at all this?" In the same interview, Tesla said that he believed that all fundamental laws could be reduced to one.

Tesla became a vegetarian in his later years, living on only milk, bread, honey, and vegetable juices.

Appearance

Tesla was 6 feet 2 inches (1.88 m) tall and weighed 142 pounds (64 kg), with almost no weight variance from 1888 to about 1926, described by newspaper editor Arthur Brisbane as "almost the tallest, almost the thinnest and certainly the most serious man who goes to Delmonico's regularly". He was an elegant, stylish figure in New York City, meticulous in his grooming, clothing, and regimented in his daily activities, an appearance he maintained as to further his business relationships. He was also described as having light eyes, "very big hands", and "remarkably big" thumbs.

Eidetic memory

Tesla read many works, memorizing complete books, and supposedly possessed a photographic memory. He was a polyglot, speaking eight languages: Serbo-Croatian, Czech, English, French, German, Hungarian, Italian, and Latin. Tesla related in his autobiography that he experienced detailed moments of inspiration. During his early life, Tesla was repeatedly stricken with illness. He suffered a peculiar affliction in which blinding flashes of light would appear before his eyes, often accompanied by visions. Often, the visions were linked to a word or idea he might have come across; at other times they would provide the solution to a particular problem he had encountered. Just by hearing the name of an item, he would be able to envision it in realistic detail. Tesla would visualize an invention in his mind with extreme precision, including all dimensions, before moving to the construction stage, a technique sometimes known as picture thinking. He typically did not make drawings by hand bu t worked from memory. Beginning in his childhood, Tesla had frequent flashbacks to events that had happened previously in his life.

Sleep habits

Tesla claimed to never sleep more than two hours per night. However, Tesla did admit to "dozing" from time to time "to recharge his batteries." During his second year of study at Graz, Tesla developed a passion for (and became very proficient at) billiards, chess and card-playing, sometimes spending more than 48 hours in a stretch at a gaming table. On one occasion at his laboratory, Tesla worked for a period of 84 hours without sleep or rest. Kenneth Swezey, a journalist whom Tesla had befriended, confirmed that Tesla rarely slept. Swezey recalled one morning when Tesla called him at 3 a.m.: "I was sleeping in my room like one dead ... Suddenly, the telephone ring awakened me ... [Tesla] spoke animatedly, with pauses, [as he] ... work[ed] out a problem, comparing one theory to another, commenting; and when he felt he had arrived at the solution, he suddenly closed the telephone."

Relationships

Tesla, a lifelong bachelor, never married; he said his chastity was very helpful to his scientific abilities. He once said in earlier years that he felt he could never be worthy enough for a woman, considering women superior in every way. His opinion had started to sway in later years when he felt that women were trying to outdo men and make themselves more dominant. This "new woman" was met with much indignation from Tesla, who felt that women were losing their femininity by trying to be in power. In an interview with the Galveston Daily News on 10 August 1924 he stated, "In place of the soft voiced, gentle woman of my reverent worship, has come the woman who thinks that her chief success in life lies in making herself as much as possible like manâ€"in dress, voice and actions, in sports and achievements of every kind ... The tendency of women to push aside man, supplanting the old spirit of cooperation with him in all the affairs of life, is very disappointing to me". Al though he told a reporter in later years that he sometimes felt that by not marrying, he had made too great a sacrifice to his work, Tesla chose to never pursue or engage in any known relationships, instead finding all the stimulation he needed in his work.

Tesla was asocial and prone to seclude himself with his work. However, when he did engage in a social life, many people spoke very positively and admiringly of Tesla. Robert Underwood Johnson described him as attaining a "distinguished sweetness, sincerity, modesty, refinement, generosity, and force." His loyal secretary, Dorothy Skerrit, wrote: "his genial smile and nobility of bearing always denoted the gentlemanly characteristics that were so ingrained in his soul." Tesla's friend, Julian Hawthorne, wrote, "seldom did one meet a scientist or engineer who was also a poet, a philosopher, an appreciator of fine music, a linguist, and a connoisseur of food and drink."

Tesla was a good friend of Francis Marion Crawford, Robert Underwood Johnson, Stanford White, Fritz Lowenstein, George Scherff, and Kenneth Swezey. In middle age, Tesla became a close friend of Mark Twain; they spent a lot of time together in his lab and elsewhere. Twain notably described Tesla's induction motor invention as "the most valuable patent since the telephone." In the late 1920s, Tesla befriended George Sylvester Viereck, a poet, writer, mystic, and later, a Nazi propagandist. Tesla occasionally attended dinner parties held by Viereck and his wife.

Tesla could be harsh at times and openly expressed disgust for overweight people, such as when he fired a secretary because of her weight. He was quick to criticize clothing; on several occasions, Tesla directed a subordinate to go home and change her dress. When Thomas Edison died, in 1931, Tesla contributed the only negative opinion to The New York Times, buried in an extensive coverage of Edison's life:

He had no hobby, cared for no sort of amusement of any kind and lived in utter disregard of the most elementary rules of hygiene ... His method was inefficient in the extreme, for an immense ground had to be covered to get anything at all unless blind chance intervened and, at first, I was almost a sorry witness of his doings, knowing that just a little theory and calculation would have saved him 90 percent of the labor. But he had a veritable contempt for book learning and mathematical knowledge, trusting himself entirely to his inventor's instinct and practical American sense.

Beliefs

On experimental and theoretical physics

Tesla exhibited a pre-atomic understanding of physics in his writings; he disagreed with the theory of atoms being composed of smaller subatomic particles, stating there was no such thing as an electron creating an electric charge (he believed that if electrons existed at all, they were some fourth state of matter or "sub-atom" that could only exist in an experimental vacuum and that they had nothing to do with electricity). Tesla believed that atoms are immutableâ€"they could not change state or be split in any way. He was a believer in the 19th century concept of an all pervasive "ether" that transmitted electrical energy.

Tesla was generally antagonistic towards theories about the conversion of matter into energy. He was also critical of Einstein's theory of relativity, saying:

I hold that space cannot be curved, for the simple reason that it can have no properties. It might as well be said that God has properties. He has not, but only attributes and these are of our own making. Of properties we can only speak when dealing with matter filling the space. To say that in the presence of large bodies space becomes curved is equivalent to stating that something can act upon nothing. I, for one, refuse to subscribe to such a view.

Tesla claimed to have developed his own physical principle regarding matter and energy that he started working on in 1892, and in 1937, at age 81, claimed in a letter to have completed a "dynamic theory of gravity" that "[would] put an end to idle speculations and false conceptions, as that of curved space." He stated that the theory was "worked out in all details" and that he hoped to soon give it to the world. Further elucidation of his theory was never found in his writings.

On society

Tesla, like many of his era, became a proponent of an imposed selective breeding version of eugenics. His opinion stemmed from the belief that humans' "pity" had interfered with the natural "ruthless workings of nature," rather than from conceptions of a "master race" or inherent superiority of one person over another. His advocacy of it was, however, to push it further. In a 1937 interview, he stated:

... man's new sense of pity began to interfere with the ruthless workings of nature. The only method compatible with our notions of civilization and the race is to prevent the breeding of the unfit by sterilization and the deliberate guidance of the mating instinct ... The trend of opinion among eugenists is that we must make marriage more difficult. Certainly no one who is not a desirable parent should be permitted to produce progeny. A century from now it will no more occur to a normal person to mate with a person eugenically unfit than to marry a habitual criminal.

In 1926 Tesla commented on the ills of the social subservience of women and the struggle of women toward gender equality, and indicated that humanity's future would be run by "Queen Bees." He believed that women would become the dominant sex in the future.

Tesla is widely considered by his biographers as a humanist regarding his worldview.

Tesla made predictions about the relevant issues of a post-World War I environment in a printed article, "Science and Discovery are the great Forces which will lead to the Consummation of the War" (20 December 1914). Tesla believed that the League of Nations was not a remedy for the times and issues.

On religion

Tesla was raised an Orthodox Christian. Later in life he did not consider himself to be a "believer in the orthodox sense," said he opposed religious fanaticism, and noted "Buddhism and Christianity are the greatest religions both in number of disciples and in importance". He also said "To me, the universe is simply a great machine which never came into being and never will end" and "what we call 'soul' or 'spirit,' is nothing more than the sum of the functionings of the body. When this functioning ceases, the 'soul' or the 'spirit' ceases likewise".

Literary works

Tesla wrote a number of books and articles for magazines and journals. Among his books are My Inventions: The Autobiography of Nikola Tesla, compiled and edited by Ben Johnston; The Fantastic Inventions of Nikola Tesla, compiled and edited by David Hatcher Childress; and The Tesla Papers.

Many of Tesla's writings are freely available on the web, including the article "The Problem of Increasing Human Energy," published in The Century Magazine in 1900, and the article "Experiments With Alternate Currents Of High Potential And High Frequency," published in his book Inventions, Researches and Writings of Nikola Tesla.

Legacy and honors

Tesla's legacy has endured in books, films, radio, TV, music, live theater, comics and video games. The impact of the technologies invented or envisioned by Tesla is a recurring theme in several types of science fiction.

Things named after Tesla

Awards

  • The Nikola Tesla Award

Enterprises and organizations

  • Tesla, an American rock band formed in Sacramento, California, in late 1982
  • Tesla, an electrotechnical conglomerate in the former Czechoslovakia
  • Tesla, Inc, an American electric car manufacturer
  • Ericsson Nikola Tesla, Croatian affiliate of the Swedish telecommunications equipment manufacturer Ericsson
  • The Tesla Society, founded in 1956
  • Udruženje za razvoj nauke Nikola Tesla, Novi Sad, Serbia
  • Zavičajno udruženje KrajiÅ¡nika Nikola Tesla, PlandiÅ¡te, Serbia

Holidays and events

  • Nikola Tesla Day in Croatia, 10 July
  • Day of Science, Serbia, 10 July.
  • Day of Nikola Tesla, Association of Teachers in Vojvodina, 4â€"10 July.
  • Day of Nikola Tesla, Niagara Falls, 10 July.
  • Nikola Tesla annual electric vehicle rally in Croatia

Measures

  • Tesla, an SI-derived unit of magnetic flux density (or magnetic inductivity)

Places

  • Belgrade Nikola Tesla Airport
  • Nikola Tesla Museum Archive in Belgrade
  • TPP Nikola Tesla, the largest power plant in Serbia
  • 128 streets in Croatia had been named after Nikola Tesla as of November 2008, making him the eighth most common street name origin in the country.
  • Tesla, a 26 kilometer-wide crater on the far side of the moon
  • 2244 Tesla, a minor planet

Schools

  • Tesla STEM High School created in 2012 in Redmond, Washington as a choice school with a focus on STEM subjects. The name was chosen by a student vote.

Songs

  • "Tesla Girls", a song by British pop band Orchestral Manoeuvres in the Dark, released in 1984

Plaques and memorials

  • The Nikola Tesla Memorial Centre in Smiljan, Croatia, opened in 2006. It features a statue of Tesla designed by sculptor Mile Blažević.
  • A plaque depicting a relief of Nikola Tesla is present on the Old City Hall (Zagreb) in Zagreb, Croatia's capital, commemorating his proposal to build an alternating current power station, which he made to the city council. The plaque quotes Tesla's statement, given in the building on 24 May 1892, which reads: "As a son of this country, I consider it my duty to help the City of Zagreb in every way, either through counsel or through action" (Croatian: "Smatram svojom dužnošću da kao roÄ'eni sin svoje zemlje pomognem gradu Zagrebu u svakom pogledu savjetom i činom").
  • On 7 July 2006, on the corner of Masarykova and Preradovićeva streets in the Lower Town area in Zagreb, a monument of Tesla was unveiled. This monument was designed by Ivan MeÅ¡trović in 1952 and was transferred from the Zagreb-based RuÄ'er BoÅ¡ković Institute where it had spent previous decades.
  • A monument to Tesla was established at Niagara Falls, New York. This monument portraying Tesla reading a set of notes was sculpted by Frano KrÅ¡inić. It was presented to the United States by Yugoslavia in 1976 and is an identical copy of the monument standing in front of the University of Belgrade Faculty of Electrical Engineering.
  • A monument of Tesla standing on a portion of an alternator was established at Queen Victoria Park in Niagara Falls, Ontario, Canada. The monument was officially unveiled on 9 July 2006 on the 150th anniversary of Tesla's birth. The monument was sponsored by St. George Serbian Church, Niagara Falls, and designed by Les Drysdale of Hamilton, Ontario. Drysdale's design was the winning design from an international competition.
  • A monument of Tesla was inveiled in Baku in 2013. Presidents Ilham Aliyev and Tomislav Nikolić attended a ceremony of unveiling
  • In 2012 Jane Alcorn, president of the nonprofit group Tesla Science Center at Wardenclyffe, and Matthew Inman, creator of web cartoon The Oatmeal, raised a total of $2,220,511 â€" $1,370,511 from a campaign and $850,000 from a New York State grantâ€"to buy the property where Wardenclyffe Tower once stood and eventually turn it into a museum. The group began negotiations to purchase the Long Island property from Agfa Corporation in October 2012. The purchase was completed in May 2013. The preservation effort and history of Wardenclyffe is the subject of a documentary by Tesla activist/filmmaker Joseph Sikorski called "Tower to the People-Tesla's Dream at Wardenclyffe Continues."
  • A commemorative plaque honoring Nikola Tesla was installed on the façade of the New Yorker Hotel by the IEEE.
  • An intersection named after Tesla, Nikola Tesla Corner, is at the intersection of Sixth Avenue and 40th Street in Manhattan, New York City. The placement of the sign was due to the efforts of the Croatian Club of New York in cooperation with New York City officials, and Dr. Ljubo Vujovic of the Tesla Memorial Society of New York.
  • A bust and plaque honoring Tesla is outside the Serbian Orthodox Cathedral of Saint Sava (formerly known as Trinity Chapel) at 20 West 26th Street in New York City.
  • A full-size, crowdfunded statue honoring Tesla with free Wi-Fi and a time capsule (to be opened on the 100th anniversary of Tesla's death, 7 January 2043) was unveiled on 7 December 2013 in Palo Alto, California (260 Sheridan Avenue).
  • Nikola Tesla Boulevard, Hamilton, Ontario.
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