Epic2112@lemmy.world to No Stupid Questions@lemmy.world · edit-22 年前If incandescent lightbulbs have a vacuum inside, why do they get so hot on the outside?message-squaremessage-square33fedilinkarrow-up199arrow-down12file-text
arrow-up197arrow-down1message-squareIf incandescent lightbulbs have a vacuum inside, why do they get so hot on the outside?Epic2112@lemmy.world to No Stupid Questions@lemmy.world · edit-22 年前message-square33fedilinkfile-text
minus-squareArchpawn@lemmy.worldlinkfedilinkarrow-up14·2 年前In addition to what others have said, they’re not a vacuum inside. They’re filled with 0.7 atm of argon gas. That would slow the transfer of heat, but there’d still be plenty of heat transfer through convection.
In addition to what others have said, they’re not a vacuum inside. They’re filled with 0.7 atm of argon gas. That would slow the transfer of heat, but there’d still be plenty of heat transfer through convection.
Why not 1 atm?