Epic2112@lemmy.world to No Stupid Questions@lemmy.world · 1 year ago

If incandescent lightbulbs have a vacuum inside, why do they get so hot on the outside?

Epic2112@lemmy.world to No Stupid Questions@lemmy.world · 1 year ago

Shouldn’t the vacuum insulate the glass from the heat of the burning filament?

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TonyTonyChopper@mander.xyz
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1 year ago
Assuming an ideal gas, going from 20 C to 100 C at constant volume brings you from 0.7 atm to 0.9
- curiosityLynx@kglitch.social
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  1 year ago
  Tracks better with my assumption than expected.

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