Originally posted by: dullard
Originally posted by: KayGee
not trying to be a smartass, but that's the first time i've heard that. do you have a source? you aren't referring to conjugate heat transfer? i'm just curious.
Just use knowledge of the world around you.
Imagine a container filled entirely with water. The water and the container are stationary and at equilibrium. The only motion in the water is the random movements of the water molecules. Suddenly you heat the water from the top. What happens?
Is it:
(A) The heat stays at the top of the water forever, so that the bottom stays cold.
(B) The heat conducts to the bottom of the water.
(C) The water starts bulk motion (ie measurable quantities of water move forming currents) moving all around stirring itself, bringing heat to the bottom?