Category:Vacuum technology
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See the [[Electron (or Vacuum) Tubes]] article for a history of vacuum tubes. | See the [[Electron (or Vacuum) Tubes]] article for a history of vacuum tubes. | ||
| + | [[Image:Vacuum Technology Quartz gravimeter pendulums 1950.jpg|thumb|right| Quartz gravimeter pendulums used in the gravimeter instrument designed by The Gulf Research and Development Company in 1929]] | ||
[[Category:Electron_devices|{{PAGENAME}}]] | [[Category:Electron_devices|{{PAGENAME}}]] | ||
Revision as of 18:36, 6 March 2012
See the Electron (or Vacuum) Tubes article for a history of vacuum tubes.
Pages in category "Vacuum technology"
The following 57 pages are in this category, out of 57 total.
Media in category "Vacuum technology"
The following 2 files are in this category, out of 2 total.
