Carnot , Nicolas Leonard Sadi
(1796–1832) French physicist
Carnot came from a distinguished Parisian political family; his father, Lazare, was a leading politician under Napoleon Bonaparte. He studied at the Ecole Polytechnique, from which he graduated in 1814. For the next few years he worked as a military engineer, but the political climate had changed with the fall of Bonaparte and, in 1819, he transferred to Paris and concentrated on scientific research.
The fruits of this work ripened in 1824 in the form of a book called Réflexions sur la puissance motrice de feu (On the Motive Power of Fire). The main theme of this masterpiece was an analysis of the efficiency of engines in converting heat into work. He found a simple formula depending only on the temperature differences in the engine and not on intermediate stages through which the engine passed. He also introduced the concept of reversibility in the form of the ideal Carnot cycle. Using these ideas he derived an early form of the second law of thermodynamics, stating that heat always flows from hot to cold. It became an inspiration, many years later, for Rudolf Clausius's formulations of thermodynamics. Carnot died of cholera at the age of 36.

Scientists. . 2011.

Look at other dictionaries:

  • Carnot, Nicolas-Léonard-Sadi — (1796 1832)    physicist, military engineer    The son of lazare nicolas marguerite carnot, Nicolas Léonard sadi Carnot was born in Paris, where he was educated at the École polytechnique. Nicolas Carnot was responsible for first discovering the… …   France. A reference guide from Renaissance to the Present

  • Carnot, (Nicolas-Léonard-) Sadi — born June 1, 1796, Paris, France died Aug. 24, 1832, Paris French scientist, known for describing the Carnot cycle. Son of Lazare Carnot, he was an army officer most of his life. Convinced that Britain s advanced steam engines and France s… …   Universalium

  • Carnot, (Nicolas-Léonard-) Sadi — (1 jun. 1796, París, Francia–24 ago. 1832, París). Científico francés, conocido por su descripción del ciclo de Carnot. Hijo de Lazare Carnot, fue oficial de ejército durante la mayor parte de su vida. Convencido de que las avanzadas máquinas de… …   Enciclopedia Universal

  • Carnot, Nicolas Léonard Sadi — ► (1796 1832) Físico francés, hijo de Lazare Nicolas Marguerite, fundador del segundo principio de la termodinámica …   Enciclopedia Universal

  • Nicolas Léonard Sadi Carnot — (* 1. Juni 1796 in Paris; † 24. August 1832 in Paris) war ein französischer Physiker und Ingenieur, er begründete mit seiner theoretischen Betrachtung der Dampfmaschine (Carnot Prozess) einen neuen Zweig der Wissenschaft, die Thermodynamik …   Deutsch Wikipedia

  • Nicolas Léonard Sadi Carnot — For the 1887–1894 president of France and nephew of Nicolas Léonard, see Marie François Sadi Carnot. Sadi Carnot Nicolas Léonard Sadi Carnot (1796 1832) in the dress uniform of a student of the École Polytechnique …   Wikipedia

  • Nicolas Léonard Sadi Carnot — Para otros usos de este término, véase Carnot. Nicolas Léonard Sadi Carnot Nicolas Léonard Sadi Carnot (París, 1 de junio de 1796 24 de agosto de 1832), normalmente llamado Sadi Carnot fue un ingeniero francés pionero en el e …   Wikipedia Español

  • Nicolas Léonard Sadi Carnot — Sadi Carnot (physicien)  Ne doit pas être confondu avec Sadi Carnot (président). Pour les articles homonymes, voir Carnot …   Wikipédia en Français

  • Nicolas Léonard Sadi Carnot — (París, 1 de junio de 1796 id., 24 de agosto de 1832) Ingeniero y científico francés. Describió el ciclo térmico que lleva su nombre (ciclo de Carnot), a partir del cual se deduciría el segundo principio de la termodinámica. Hijo del… …   Enciclopedia Universal

  • Nicolas Léonard Sadi — (1796 1832) fils du préc.; physicien français, auteur de Réflexions sur la puissance motrice du feu et des machines propres à développer cette puissance (1824), fondateur de la thermodynamique. || PHYS Principe de Carnot: un moteur thermique ne… …   Encyclopédie Universelle

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