File:Geissler tubes (switched on).jpg

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Description
English: A modern electrical artwork that is an imitation of a Geissler tube, a gas discharge tube invented by Heinrich Geissler in 1857. It consists of a series of glass tubes filled with various gases at low pressure, with metal electrodes at each end. A high voltage of several thousand volts is applied between the electrodes. The high voltage ionizes the gas causing it to give off light by fluorescence in a glow discharge. The color of the light depends on the gas used. Geissler tubes like this of many elaborate shapes and colors were made for entertainment starting around 1860 until the turn of the 20th century. By the 1920s this technology was commercialized in neon signs.
Русский: Лампы Гейслера
Date
Source Geissler Tube
Author Paul Downey from Berkhamsted, UK
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This image, originally posted to Flickr, was reviewed on August 15, 2008 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date.

Captions

Glowing Geissler tube sculpture in museum

Items portrayed in this file

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inception

26 November 2006

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Date/TimeThumbnailDimensionsUserComment
current17:50, 15 August 2008Thumbnail for version as of 17:50, 15 August 20082,250 × 2,378 (1.8 MB)File Upload Bot (Magnus Manske) {{Information |Description= |Source=[http://www.flickr.com/photos/45581782@N00/308088417/ Geissler Tube] * Uploaded by Pieter Kuiper |Date=November 26, 2006 at 13:14 |Author=[http://www.flickr.com/people/45581782@N00 Paul Downey]
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