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| | Benoit Paul Émile Clapeyron - Wikipedia, the free encyclopedia |
 | | In 1834, he made his first contribution to the creation of modern thermodynamics by publishing a report entitled the Driving force of the heat (Puissance motrice de la chaleur), in which it developed the work of the physicist Nicolas Léonard Sadi Carnot, deceased two years before. |
 | | Though Carnot had developed a compelling analysis of a generalised heat engine, he had employed the clumsy and already unfashionable caloric theory. |
 | | These foundations enabled him to make substantive extensions of Clausius' work, including the formula, now known as the Clausius-Clapeyron relation, which characterises the phase transition between two phases of matter. |
| en.wikipedia.org /wiki/%C3%89mile_Clapeyron (392 words) |
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