File:Tesla-bulb.jpg

Summary

DescriptionTesla-bulb.jpg	English: Serbian-American inventor Nikola Tesla demonstrating wireless power transmission, probably in his New York laboratory in the 1890s. The bulb is a prototype "fluorescent" light he invented consisting of a partially evacuated glass bulb with a single metal electrode. Nearby but not visible 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. Tesla invented a residential wireless lighting system in the 1889s.
Date	circa 1900 date QS:P,+1900-00-00T00:00:00Z/9,P1480,Q5727902
Source	http://www.classictesla.com/photos/tesla/tesla.html
Author	Unknown authorUnknown author
Other versions

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The original description page was here. All following user names refer to en.wikipedia.

2012-05-13 10:04 Свифт 344×438× (24438 bytes)
2005-12-23 07:47 Antidote 250×364× (4855 bytes) {{PD-US}} '''Source:''' [http://www.classictesla.com/photos/tesla/tesla.html]

	Date/Time	Dimensions	User	Comment
current	04:50, 13 August 2012	344 × 438 (24 KB)	OgreBot	(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2012-05-13 10:04:22 by Свифт
	04:50, 13 August 2012	250 × 364 (5 KB)	OgreBot	(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2005-12-23 07:47:32 by Antidote
	19:55, 10 August 2012	344 × 438 (24 KB)	Свифт	new version
	17:08, 1 February 2008	362 × 491 (30 KB)	Alexenergy	{{Information \|Description=Tesla \|Source=Unknown \|Date=1949 \|Author=Unknown \|Permission=public domain \|other_versions= }}