3 ms·
Is it possible to have a material that doesn't conduct heat?
by emerongi 7y ago
Is it possible to have a material that doesn't conduct heat?
- saagarjha 7y agoThe lack of a material, e.g. a perfect vacuum, as long as radiation doesn't get involved.
- duckymcduckface 7y agoRadiation becomes the dominant heat transfer mode in that case though, usually gets really small at day to day temperatures though.
- Dylan16807 7y agoIt's not that small. Blackbody radiation at room temperature is 450 watts per square meter. And it only takes an extra 15C to get 100 net watts transferred per square meter.
- katmannthree 7y agoRadiation is always involved, even at very low temperatures.
- opportune 7y agoNo, that would essentially mean that it doesn’t interact with neighboring matter (eg air bouncing off of it) since heat is really an emergent property of all the particles in a material bouncing/vibrating amongst each other. There are things that don’t conduct heat but they aren’t regular matter.
- klyrs 7y agoSuperconductors come pretty close.
- jacquesm 7y agoNo, but you can get surprisingly close with aerogels: https://www.youtube.com/watch?v=PmKt_6EhA24 https://www.youtube.com/watch?v=PmKt_6EhA24