Image:Triode tube 1906.jpg

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Camera location

37.618615° N, 122.386993° W

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Description

Lee de Forest's triode tube (Audion) from 1906. Courtesy of History of San Jose, Perham Collection of Early Electronics.
Source

Photo by uploader, taken at The History of Audio: The Engineering of Sound, an exhibition of the San Francisco Airport Museums[1] in SFO Airport, Terminal 3 from 2006-09 to 2007-05.
Date

2006:11:12 21:47:31 GMT
Author

Gregory F. Maxwell <gmaxwell@gmail.com> PGP:0xB0413BFA
Permission
(Reusing this image)

GFDL-1.2

I, the copyright holder of this work, hereby publish it under the following license:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 only as published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "Text of the GNU Free Documentation License."

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File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeDimensionsUserComment
current22:53, 20 December 20061,835×1,258 (194 KB)Yves-Laurent (Rétablissement de la version précédente)
22:50, 20 December 20061,835×1,258 (194 KB)Yves-Laurent (== Summary == {{Information |Description= Lee de Forest's triode tube (Audion) from 1906. Courtesy of History of San Jose, Perham Collection of Early Electronics. |Source= en:Triode_tube_1906.jpg : Photo by original uploader, taken at The History of )
03:46, 13 November 20061,835×1,258 (194 KB)Gmaxwell ({{Location dec|37.618615|-122.386993|scale:1000}} {{Information |Description=Lee de Forest's triode tube (Audion) from 1906. Courtesy of History of San Jose, Perham Collection of Early Electronics. |Source=Photo by uploader, taken at ''The History of Audi)
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