Heat & Temperature

Hot or Cold Chimneys

HOT OR COLD CHIMNEYS demonstrates how the hands adapt to extreme temperatures, sometimes with strange results. After putting each hand on the outside columns for a count of fifteen, visitors put both hands on the center column, and observe the same object feels differently to different hands. The middle chimney is at room temperature, but it feels cool to the hand that has been on the hot chimney and warm to the hand that was on the cold chimney. Beneath the skin are temperature sensing nerves. These nerves can tell whether an object is warmer or cooler than body temperature, but they quickly adapt and the object starts to feel "normal", neither warm nor cold.