Posted: Nov 05, 2013 10:03 am
by Berthold
When the inside of the freezer is covered with a layer of frost, a warm container will readily melt through this layer, and the bottom of the container has direct contact with the freezer surface. A cold container will stay resting on the layer, which is a bad conductor of heat.

Are there any studies if the Mpemba effect works only under such conditions?