Deborah & William Hillyard
Deborah & William Hillyard
Deborah & William Hillyard
Deborah & William Hillyard
Deborah & William Hillyard
 
Is the Universe really a giant hologram?  The essence of the Holographic Principle is very simple.  It is all about encoding information from a space in "n" dimensions into a space of "n-1" dimensions.  This is exactly what a holographic image does, allowing a view of a three dimensional object on a two dimensional surface.  In physics, one example is the theory that all the information about the history of a black hole, essentially its entropy, is encoded on its surface; that is, at the Event Horizon.  The "bit" of information is represented by an area bounded on each side at the Planck length; that is ~10-66 sq cms.  This could be extended to the whole Universe, if the Universe has an Event Horizon, which it would not have if dark energy theories prove correct.  Unfortunately, once one goes beyond this simple description, the mathematics becomes extremely complex very quickly. 

Here is a view from Cambridge University, and another from Wikipedia.  This piece from Universe Review uses some mathematics, but keeps it as simple as possible. 

Science - Quantum Gravity

Holographic Principle
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