The book A Popular History of Science was written by author Robert Routledge Here you can read free online of A Popular History of Science book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Popular History of Science a good or bad book?
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As the vessels are similar and equal, they must receive equal quantities of heat in the same time ; yet, while the thermometer in the water-vessel has risen perhaps 20, that in the ice-vessel gives no indication whatever of the heat which has been communicated to that vessel. What, asked Black, becomes of the heat which has been all along given to the vessel of ice ? His reply was that the heat had in some way been expended in converting the ice into water : of this heat the thermometer gives n...o indication ; but, although it has not shown itself as temperature, it is nevertheless existent in a latent form. For if, when the whole has become changed into ice-cold water at 32, the vessel is exposed to cold again, the water at 3 2 is not immediately reconverted into ice, but must first part with all its latent heat. The amount of this heat which becomes latent when ice is converted into water may be measured. If i Ib. Of dry pounded ice at 32 be mixed with i Ib. Of water at 175 F. , the result will be 2 Ibs.
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