Question

What is An Entropy ?​

Answer 1

Answer:

Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. Because work is obtained from ordered molecular motion, the amount of entropy is also a measure of the molecular disorder, or randomness, of a system.

Answer 2

Answer:

Entropy is a measure of the energy dispersal in the system. We see evidence that the universe tends toward highest entropy many places in our lives.

Some examples...

A campfire is an example of entropy. The solid wood burns and becomes ash, smoke and gases, all of which spread energy outwards more easily than the solid fuel.