File:Tesla polyphase AC 500hp generator at 1893 exposition.jpg

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Description	English: Tesla's Polyphase Alternating Current 500 horse power generator, in Westinghouse exhibit in the Electricity building of the 1893 World Columbian Exposition in Chicago.
Date	1893
Source	http://www.teslasociety.com/columbia_expo.htm Accessed on 2008-12-27
Author	Unknown authorUnknown author
Permission (Reusing this file)	Public domain
Other versions	view of Tesla exhibit from opposite side: File:Tesla polyphase exhibit at 1893 worlds fair.png

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	19:37, 15 August 2018		600 × 369 (71 KB)	Wdwd (talk \| contribs)	higher resolution, grey-JPG
	08:30, 29 December 2008		512 × 315 (66 KB)	J JMesserly (talk \| contribs)	== Summary == {{Information \|Description={{en\|Tesla's Polyphase Alternating Current 500 horse power generator, in Westinghouse exhibit in the Electricity building of the 1893 World Columbian Exposition in Chicago.}} \|Source=http://www.teslasociety.com/col

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