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 to

No Stupid Questions • 1 year ago

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

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@Mr_Blott
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1 year ago
Go see what happens if you lick a radio transmitter aerial and report back

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