James Prescott Joule
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James Prescott Joule was an English physicist. Joule studied the nature of heat and discovered its relationship to mechanical work. This led to the law of conservation of energy, which in turn led to
An electric motor presented to Kelvin by James Joule in 1842. Hunterian Museum, Glasgow.
Joule's Heat Apparatus, 1845
James Prescott Joule
Caloric theory
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The caloric theory is a superseded scientific theory that heat consists of a self-repellent fluid called "caloric" that flows from hotter bodies to colder bodies. Caloric was also thought of as a weig
The world's first ice-calorimeter, used in the winter of 1782–83, by Antoine Lavoisier and Pierre-Simon Laplace, 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.
1787 copy of "Méthode de Nomenclature Chimique," featuring work by Morveau.