File:Kelvin's Tesla coil 1897.jpg

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DescriptionKelvin's Tesla coil 1897.jpg	English: Small Tesla coil a resonant transformer circuit invented in 1891 by Nikola Tesla which produces high voltage, high frequency electricity. Owned by William Thompson, Lord Kelvin, who did some of the first mathematical analysis of resonance in electrical circuits. Shown producing streamers between two loops of wire attached to the output terminals. Caption: "Tesla oscillation transformer (Tesla coil) presented by Lord Kelvin before the British Association August 1897. This small and compact instrument, only 8 inches high, developed 2 square feet of streamers from 25 watts from the 110 volt DC supply circuit. The instrument contains a Tesla primary and secondary, condenser, and a circuit controller.
Date	May 1919
Source	Retrieved March 10, 2014 from Nikola Tesla, "My Inventions IV: The Discovery of the Tesla Coil and Transformer" in Electrical Experimenter magazine, Experimenter Publishing Co., New York, Vol. 7, No. 1, May 1919, p. 16, fig. 1 on American Radio History website
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	03:16, 27 November 2014		485 × 632 (39 KB)	Chetvorno (talk \| contribs)	User created page with UploadWizard

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