Though a cornerstone of thermodynamics, entropy remains one of the most vexing concepts to teach budding physicists in the classroom. Physics teachers designed a hand-held model to demonstrate the ...

Running in reverse They found that the change in entropy was negative over time intervals of a few tenths of a second, revealing nature running in reverse.

Nonequilibrium Thermodynamics: The study of systems that are not in thermodynamic equilibrium, focusing on the flows of energy and matter and the production of entropy.

Learn all about thermodynamics, the science that explores the relationship between heat and energy in other forms.

One thing to keep in mind through all this is that the concept of entropy was introduced by mathematician who was trying to express the second law of thermodynamics in an equation.

As physicists extend the 19th-century laws of thermodynamics to the quantum realm, they’re rewriting the relationships among energy, entropy and information.

As entropy production increases, so does this ratio: A system’s behavior becomes more and more “irreversible.” The simple yet rigorous formula could in principle be applied to any thermodynamic ...

Axel Kleidon, Non-equilibrium thermodynamics, maximum entropy production and Earth-system evolution, Philosophical Transactions: Mathematical, Physical and Engineering Sciences, Vol. 368, No. 1910, ...

The resulting counts agree with predictions made by the so-called Bekenstein-Hawking entropy formula and may lead to a deeper understanding of these extreme astrophysical objects. Black hole ...