3 ms·
> you can't do is to take Q units of heat energy from one body and transfer it all to a higher temperature body Except it's not "heat energy", it's electromagn
by jarfil 8y ago
> you can't do is to take Q units of heat energy from one body and transfer it all to a higher temperature body
Except it's not "heat energy", it's electromagnetic energy that's getting transferred. If the target object is smaller than the source object, you can have an amount of energy that will increase the target's heat above that of the source.
- schoen 8y agoI don't think it could remain above the source temperature in equilibrium, because it will radiate back toward the source!
- amelius 8y ago> Except it's not "heat energy", it's electromagnetic energy that's getting transferred. Thermal radiation == electromagnetic radiation.
- gowld 8y agoIt's impossible to aim the source at a smaller target because the source dissipates in all directions, unless you make something like a laser.