No Stupid Questions@lemmy.world · 3 年前

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 · 3 年前

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

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3 年前
Same way sun heats the earth

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