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-square54fedilinkarrow-up1116arrow-down13file-text
arrow-up1113arrow-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-square54fedilinkfile-text
minus-squarekadu@lemmy.worldlinkfedilinkarrow-up2·2 年前There’s no perfect vacuum. But as others have mentioned already, most of it is electromagnetic radiation. A very small part of this radiation is the visible light you see, most of it is invisible to the human eye.
There’s no perfect vacuum. But as others have mentioned already, most of it is electromagnetic radiation. A very small part of this radiation is the visible light you see, most of it is invisible to the human eye.