Curiosities of Science Past And Present a book for Old And Young 1st Ser
Curiosities of Science Past And Present a book for Old And Young 1st Ser
John Timbs
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By the same rule, solid mercury, say 50 below zero, may, in any climate or tempera- ture of the atmosphere, be immediately warmed and melted by being imbedded in a cake of ice. Scientific American. REPULSION BY HEAT. If water is poured upon an iron sieve, the wires of which are made red-hot, it will not run through ; but on cooling, it will pass through rapidly. M. Boutigny, pursuing this curious inquiry, has proved that the moisture upon the skin is sufficient to protect it from disorganisatio...n if the arm is plunged into baths of melted metal. The resistance of the surfaces is so great that little elevation of temperature is experienced. Professor Pliicker has stated, that by washing the arm with ether previ- ously to plunging it into melted metal, the sensation produced while in the molten mass is that of freezing coldness. R. Hunt, F. R. S. PKOTECTION FKOM INTENSE HEAT. The singular power which the body possesses of resisting great heats, and of breathing air of high temperatures, has at various times excited popular wonder.
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