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In Reply to: RE: most intresting tube posted by Nunki on July 24, 2017 at 05:18:10:
"?? what does make the difference between the bulbs inner vacuum in 50,000 or 5,000 altitude. can anyone explain please?"
Maybe something to do with heat dissipation, and the difference in air convection at low pressure vs normal pressure?
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Follow Ups
- RE: most intresting tube - cpotl 05:40:01 07/24/17 (0)