3
votes
2answers
534 views

Why is oil a poor conductor of heat?

Why is oil a poor conductor of heat? Does it help in insulation?
1
vote
1answer
209 views

Per unit area, is there more heat transfer through the open top of a mug or the side walls?

I had a mug of hot coffee cool too rapidly for my liking the other day, which made me wonder what was the greater contributor to heat loss for a typical open-top ceramic mug: the open top, the walls, ...