Bekenstein-Hawking Entropy

Bekenstein-Hawking entropy is a measure of the information content or disorder of a black hole. It states that the entropy is proportional to the black hole's surface area, not its volume. This means the amount of information hidden inside a black hole relates directly to its event horizon’s size. Essentially, black holes can be thought of as cosmic storage units, with their entropy representing the number of possible internal configurations consistent with their outer appearance. This idea links gravity, quantum mechanics, and thermodynamics, helping scientists understand the fundamental nature of black holes and the universe.