In Reply to: light bulb led to invention of vacuum tube posted by xsb7244 on May 5, 2021 at 13:04:27:
I am not convinced that is wholly correct. Evidence please.
"We need less, but better" - Dieter Rams
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- RE: light bulb led to invention of vacuum tube - PAR 05/5/2114:49:33 05/5/21 (0)