Entropy

Entropy is a fundamental concept in various fields, including physics, information theory, and statistics. It quantifies the level of disorder or uncertainty in a system. In thermodynamics, entropy is a measure of the unavailable energy in a closed thermodynamic system that is also usually considered to be a measure of the system's disorder. In information theory, entropy represents the average amount of information produced by a stochastic source of data. It provides a crucial tool for understanding the behavior of systems, ranging from the microscopic level of particles to the macroscopic scale of the universe.