3 ms·
Educate us please?
by dwaltrip 7y ago
Educate us please?
- saagarjha 7y agoThe relationship is generally true for metals (https://en.wikipedia.org/wiki/Wiedemann–Franz_law https://en.wikipedia.org/wiki/Wiedemann–Franz_law) but an appliance being warm to the touch because you use it is not really related.
- blix 7y agoMotors become hot because they generate heat through friction and other forms of loss. Many other appliances generate heat this way (and some are designed to generate heat). Conductive materials are likely to be good heat conductors because the electrons themselves can conduct heat, and because the crystal structures of conventional metals (e.g. copper) tend to be good for both. These two effects are entirely unrelated.
- dwaltrip 7y agoThanks, that makes sense.
- dbcurtis 7y agoMotors and appliances get hot because inefficiencies eventually become waste heat. That is the source of the heat. It propagates from tbe heat source to a surface you can feel through conduction and other mechanisms.
- dwaltrip 7y agoThanks!