"The first of these steps is the invention of the thermometer... The second step is the measurement of quantities of heat, or . The whole science of heat is founded on Thermometry and Calorimetry, and when these operations are understood we may proceed to the third step, which is the investigation of those relations between the thermal and the mechanical properties of substances which form the subject of Thermodynamics."
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Theory of Heat
Theory of Heat is a textbook written by James Clerk Maxwell and published in 1871, London: Longmans, Green and Co. It was printed by Spottiswoode and Co.
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