Calorimetry
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In chemistry and thermodynamics, calorimetry is the science or act of measuring changes in state variables of a body for the purpose of deriving the heat transfer associated with changes of its state
The world's first ice-calorimeter, used in the winter of 1782–83, by Antoine Lavoisier and Pierre-Simon de la Place, to determine the heat involved in various chemical changes; calculations which were based on Joseph Black's prior discovery of latent heat. These experiments mark the foundation of thermochemistry.
Snellen direct calorimetry chamber, University of Ottawa
Indirect calorimetry metabolic cart measuring oxygen uptake and CO2 production of a spontaneously breathing subject (dilution method with canopy hood).
Heat
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In thermodynamics, heat is defined as energy in transfer between a body and its surroundings, other than through thermodynamic work or through transfer of matter.
Calorimetry
…Calorimetry is performed with a calorimeter. Scottish physician and scientist Joseph Black, who was the first to recognize the distinction between heat and temperature, is said to be the founder of the science of calorimetry. Indirect calorimetry calculates heat that living organisms produce by measuring…
A glowing-hot metal bar showing incandescence, the emission of light due to its temperature, is often recognized as a source of heat.
Galileo Galilei
John Locke
Brook Taylor