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J. Perelman
"Entertaining physics". Book 2.
Chapter 7. Thermal phenomena


Now were talking about cool boiled water. There is an even more amazing thing: hot ice. We used to think that the water in the solid state cannot exist at temperatures above 0°. Studies English physics Bridgman showed that this is not the case: under very considerable pressure water passes into the solid state and remains at a temperature substantially above 0°. Generally Bridgman showed that there may be not one sort of ice. The ice, which he calls "ice No. 5, obtained under enormous pressure at 20 600 atmospheres and remains solid at a temperature of 76°C. It would burn us fingers, if we could have touched. But touching it: ice No. 5 is formed under pressure from powerful press in thick-walled vessel made of the best steel. To see him or to take arms against it, and the properties of "hot ice" know only indirectly.

Interestingly, the "hot ice" denser than ordinary, even denser water: its specific gravity of 1.05. He would have to sink in water, whereas ordinary ice in it floats.

Entertaining physics J. Perelman


System Orphus


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