Bach, Johann Sebastian
Big Bang Theory
Khan, Hazrat Inayat
Khan, Pir Vilayat Inayat
Khan, Pir Zia
Pir o Murshid
A hologram is a photograph that, when seen in the right light, appears to be three dimensional. It is created by recording an interference pattern of light. This interference pattern occurs at the photographic plate when light coming directly from the light source mingles with light being reflected off of the hologram's subject. The light source used is often a laser, preferred for it's simplicity and purity.
At this point, all the image's information has been recorded. Seen in the wrong light however, the hologram will look just like the surface of a pond broken by skipping stones—an interference pattern devoid of meaning.
To retrieve the image, a light source with the same wavelength as the original recording light must strike the hologram. This effectively cancels out the portion of the interference pattern recorded directly from the original light source, revealing a three dimensional image of the subject.
Moving around the hologram is just like moving around the physical version of the subject. It appears fully three dimensional. This is because a different image is decoded from the interference pattern from each vantage point.
If the hologram is broken in two, the image will continue to show in its entirety. In fact, it can be broken into many pieces and each will contain the same complete information—the image just gets dimmer as the fractions get smaller.
"This offers a way of understanding how memories could be distributed rather than localized in the brain. If it is possible for every portion of a piece of a holographic film to contain all the information necessary to create a whole image, then it seems equally possible for every part of the brain to contain all of the information necessary to recall a whole memory."—The Holographic Universe