Books, Brochures, and Chapters>Book:  Black , Joseph (1806), Lectures on the elements of chemistry, Retrieved on 2012-01-15
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    15 JAN 2012

     Heat Makes Solids Fluids and Fluids Gases

    The opinion I formed from attentive observation of the facts and phenomena, is as follows. When ice, for example, or any other solid substance, is changing into a fluid by heat, I am of opinion that it receives a much greater quantity of heat than that what is perceptible in it immediately after by the thermometer. A great quantity of heat enters into it, on this occasion, without making it apparently warmer, when tried by that instrument. This heat, however, must be thrown into it, in order ...
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    Black believes there is more heat going into ice that turns to water than is registered on a thermometer.