Category:Vacuum technology: Difference between revisions
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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}}]] | |||
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 62 pages are in this category, out of 62 total.
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Media in category "Vacuum technology"
The following 2 files are in this category, out of 2 total.
Vacuum Technology Quartz gravimeter pendulums 1950.jpg 664 × 542; 32 KB
VacuumTubeFamilyTree0008.jpg 480 × 619; 57 KB
