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Uploaded on Feb 24, 2012
It depends. In a very hot day when the ambient temperature exceeds body temperature, a piece of metal feels warmer than a piece of wood, even though they are both at the same temperature. This experiment simulates that situation by using two identical cold objects taken out from a freezer and placing them on top of a metal piece and foam. (We can't raise room temperature or lower our body temperature, but we can pretend that the cold pieces were fingers.)
This video creates an impression that, just like "hot," "cold" flows too. Why is that so?