File:Nikola Tesla holding bulb.jpg

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DescriptionNikola Tesla holding bulb.jpg	English: Serbian-American inventor Nikola Tesla demonstrating wireless power transmission, probably in his New York laboratory in the late 1890s. The bulb is a prototype "fluorescent" light he invented consisting of a partially evacuated glass bulb with a single metal electrode. Nearby, probably behind the curtain, there is one of his Tesla coil high voltage oscillators which produces a radio frequency electric field. The electric field ionizes the gas in the bulb, causing it to glow similar to a neon light. This photo is a 2 second time exposure taken by the light of the bulb. Tesla invented a residential wireless lighting system in the 1889s.with lamps that do not have to be plugged in.
Date	29 March 1899
Source	Published in "Some experiments in Tesla's laboratory with currents of high potential and high frequency" in Electrical Review, McGraw-Hill Publishing Co., New York, Vol. 34, No. 18, March 29, 1899, p. 193, fig. 1
Author	Nikola Tesla

Public domain	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
	This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	02:16, 24 April 2015		326 × 543 (44 KB)	Chetvorno (talk \| contribs)	User created page with UploadWizard

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