Category:Vacuum technology

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See the Electron (or Vacuum) Tubes article for a history of vacuum tubes.

Quartz gravimeter pendulums used in the gravimeter instrument designed by The Gulf Research and Development Company in 1929

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.

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