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The caloric theory is a superseded scientific theory that heat consists of a self-repellent fluid called "caloric" that flows from hotter bodies to colder bodies.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 weightless gas that could pass in and out of pores in solids and liquids. The caloric theory was superseded by the mid-19th century in favor of the mechanical equivalent of heat, but nevertheless persisted in some scientific literature—particularly in more popular treatments—until the end of the 19th century.

Antoine LavoisierAntoine-Laurent de Lavoisier ( ; French:; 26 August 1743 – 8 May 1794), also Antoine Lavoisier after the French Revolution, was a French nobleman and chemist who was central to the 18th-century chemical revolution and who had a large influence on both the history of chemistry and the history of biology. It is generally accepted that Lavoisier's great accomplishments in chemistry stem largely from his changing the science from a qualitative to a quantitative one. Lavoisier is noted for his discovery of the role...

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