In 1813, Napoleon's failed campaign against Russia led to a coup d'état in Paris, France. Prussia and Austria then invaded France. Among the troops guarding Paris at the time was Sadie Carnot.

THE cycle proposed by Dr. J. S. Haldane (NATURE, August 29, p. 326) as a standard of comparison for steam engine performance can be shown quite readily on a temperature-entropy chart, and thus be ...

Heat engines are ubiquitous as they lie at the core of cars, aircraft, refrigerators, power plants and miniature motors. But they are currently limited by Carnot's maximum efficiency rule, according ...

Harnessing quantum states that avoid thermalization enables energy harvesters to surpass traditional thermodynamic limits ...

Researchers have shown that the effi ciency at maximum power of a quantum Otto engine can be dramatically enhanced by coupling it to a squeezed thermal reservoir. While standard heat engines interact ...

Engineers have reported on the development of a microscopic motor operating between two thermal baths, that is, a micro Carnot engine. In a recent study published in Nature Physics, ICFO researchers ...

Power boost: a quantum heat engine in synthetic diamond. (Courtesy: Jonas Becker) Physicists have in recent years built a number of microscopic heat engines to investigate how the laws of ...

IN a paper on Carnot's Cycle and the Efficiency of Heat Engines, reported in NATURE, August 29, Dr. J. S. Haldane comes to the astonishing conclusion that “the Carnot cycle is radically in efficient” ...

In a recent study published in Nature Physics, ICFO researchers Ignacio Martínez, Édgar Roldán, the late Dmitri Petrov and Raúl Rica, in collaboration with the Universidad Complutense de Madrid, have ...