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We have noticed you haven't logged in for 2 weeks, we're just checking to see that everything is okay with our biggest fan. Since you visited us last time we've updated the Gay section with many videos we know you will enjoy. See you soon!
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In 1972, Jacob Bekenstein conjectured that black holes should have an entropy, where by the same year, he proposed no hair theorems.
In 1973 Bekenstein suggested {\displaystyle {\frac {\ln {2}}{8\pi }}\approx 0.276}{\displaystyle {\frac {\ln {2}}{8\pi }}\approx 0.276} as the constant of proportionality, asserting that if the constant was not exactly this, it must be very close to it. The next year, in 1974, Stephen Hawking showed that black holes emit thermal Hawking radiation corresponding to a certain temperature (Hawking temperature).
A is the area of the event horizon, is the Boltzmann constant, and is the Planck length. This is often referred to as the Bekenstein–Hawking formula. The subscript BH either stands for "black hole" or "Bekenstein–Hawking". The black-hole entropy is proportional to the area of its event horizon. The fact that the black-hole entropy is also the maximal entropy that can be obtained by the Bekenstein bound (wherein the Bekenstein bound becomes an equality) was the main observation that led to the holographic principle. This area relationship was generalized to arbitrary regions via the Ryu–Takayanagi formula, which relates the entanglement entropy of a boundary conformal field theory to a specific surface in its dual gravitational theory