Imagem:Triode tube 1906.jpg
Origem: Wikipédia, a enciclopédia livre.
| Location |
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Google Maps - TopoZone - TerraServer-USA |
|---|
| 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 Maxwell |
| Permission |
GFDL-1.2 |
 |
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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