author
Sadi Carnot
1796–1832
A brilliant French engineer and physicist, he laid the groundwork for thermodynamics with a single, remarkably influential book. His ideas about heat engines and efficiency shaped modern physics long after his early death.
1 Audiobook
Reflections on the motive power of heat : and on machines fitted to develop that power
by Sadi Carnot, Baron William Thomson Kelvin
About the author
Born in Paris on June 1, 1796, Nicolas Léonard Sadi Carnot grew up in a prominent family and studied at the École Polytechnique before serving as an officer in the engineering branch of the French Army. Though trained as a military engineer, he is remembered today for the scientific insight that made him one of the key founders of thermodynamics.
In 1824, he published his best-known work, Reflections on the Motive Power of Fire, a short book that examined how heat engines work and what limits their efficiency. From that study came the ideas later known as the Carnot cycle and Carnot efficiency, concepts that became central to physics and engineering.
Carnot died in 1832 at just 36 years old. Even with such a brief life and a small body of published work, he earned a lasting reputation as the "father of thermodynamics" because of how deeply his thinking influenced later scientists.