Epic2112@lemmy.world to No Stupid Questions@lemmy.world · edit-21 year agoIf incandescent lightbulbs have a vacuum inside, why do they get so hot on the outside?message-squaremessage-square51fedilinkarrow-up176arrow-down12file-text
arrow-up174arrow-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-21 year agomessage-square51fedilinkfile-text
minus-squareTonyTonyChopper@mander.xyzlinkfedilinkarrow-up2·edit-21 year agoIt does do that though. My vacuum thermos keeps things hot or cold for like 6 hours
It does do that though. My vacuum thermos keeps things hot or cold for like 6 hours