File:SY4307AHtr01.jpg
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Original file (1,497 × 1,408 pixels, file size: 141 KB, MIME type: image/jpeg)
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Summary
| Description |
English: ST4307A Thermionic Valve/Vacuum Tube, view of lit directly heated cathode. 140KB.
Author: Andrew Kevin Pullen. Created: 3rd April 2009. Source: My own work. |
| Date | 4 April 2009 (original upload date) |
| Source | Transferred from en.wikipedia to Commons. |
| Author | Globe Collector at English Wikipedia |
Licensing
|
This work has been released into the public domain by its author, Globe Collector at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: Globe Collector grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 2009-04-04 13:15 | 1497×1408× (144246 bytes) | Globe Collector | ST4307A Thermionic Valve/Vacuum Tube, view of lit directly heated cathode. 140KB. Author: Andrew Kevin Pullen. Created: 3rd April 2009. Source: My own work. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:43, 5 October 2017 | | 1,497 × 1,408 (141 KB) | Drahtlos | Transferred from en.wikipedia |
File usage
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Global file usage
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- Usage on www.wikidata.org
