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No Stupid Questions@lemmy.world · 1 year ago

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

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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 insulated the glass from the heat of the burning filament?

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Hazdaz@lemmy.world
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1 year ago
3 forms of heat transfer

Conduction. Transfer of heat from one medium to another.

Convection. Transfer of heat within the same medium.

Radiation. Non-contact transfer of heat.

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