Ii. Simplified Theory of Refreezing
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چکیده
A metal wire attached to a weight can cut through a block of ice without cutting it. This phenomenon is due to the fusion of ice under the wire, where the pressure is greater, and refreezing of water behind the wire, where the pressure is lower. Bottomley (1872) was the first to discover this effect. He also observed that a wire of low thermal conductivity, for a given diameter and mass, will pass through the ice more slowly than a wire with higher thermal conductivity. A number of experiments have since been produced, but this phenomenon still isn’t very well understood.
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