Jacob Bekenstein
(1947-2015)
Jacob Bekenstein was an American-Israeli theoretical physicist whose interpretation of the event horizon of a black hole as an amount of information was the basis for
Leobard Susskind's
holographic principle.
Bekenstein showed that the addition of a single particle to a black hole would enlarge its size, specifically its surface area or event horizon .
A very low-energy photon with a wavelength the size of the black hole would expand the event horizon by one Planck area (a square with sides equal to one Planck length).
Susskind interpreted each new Planck area as adding an amount of information equal to the lost or hidden information (or entropy) newly added to the singularity at the black hole center.
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