@Dukedog said in #19:
> How can a thermos bottle keep hot things hot and cold things cold?I mean,how does it know?
Conduction and convection of the heat doesn't occur due to the vacuum in the bottle. Although, a little of heat is lost from the lid so it does but it doesn't keep hot things hot like it was 2 hours ago, in that bottle.
> How can a thermos bottle keep hot things hot and cold things cold?I mean,how does it know?
Conduction and convection of the heat doesn't occur due to the vacuum in the bottle. Although, a little of heat is lost from the lid so it does but it doesn't keep hot things hot like it was 2 hours ago, in that bottle.