Effect of Pressure on the Freezing Point
المؤلف:
GEORGE A. HOADLEY
المصدر:
ESSENTIALS OF PHYSICS
الجزء والصفحة:
p-268
2025-11-24
48
The effect of increased pressure on the freezing point of water is seen in the following:
Demonstration. - Place a block of ice on a suitable support and put over it a piece of wire with a heavy weight at each end. This brings pressure upon the ice directly under the wire and it will melt. As the wire sinks in the ice the melted water above it, being freed from pressure, freezes again and finally the wire will cut entirely through the ice, which will still remain as a single block.
This thawing and freezing of ice under great changes of pressure is seen in a large scale in glaciers, their constant flow down a slope being dependent on this action.
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