When a thermodynamic system is changed sufficiently slowly, entropy is generally conserved and the process is adiabatic, and therefore reversible. However, this adiabaticity does not seem to hold ...

As a result, the total entropy of the system remains constant and the system remains magnetized at the end of the process.” To help understand the phenomenon, it is worth recalling the basics of ...

A physicist solves an old thermodynamic puzzle and demonstrates directly from the second law that entropy disappears at ...

The Second Law of Thermodynamics says, in simple terms, entropy always increases. This principle explains, for example, why you can't unscramble an egg.

We all know “things fall apart” in the universe due to entropy, but quantum mechanics has turned a lot of what we’ve believed on its head in the last 100—and even 10—years.

We demonstrate the design of low entropy state schemes that increase coherent control in quantum evolution through laser cooling. To do so, we construct an example problem of high impulse lasers that ...

Throughout this process, a portion of the energy is lost to entropy. ... To maintain the same temperature, the gas must expand. Next, adiabatic expansion, ...