If a picture says a thousand words, then what does a hologram say? A hologram has the ability to freeze the image and give it realistic dimension. Holography is the strange name given to a still stranger art and technique today at work in laboratories and research centers. Its unique source is the hologram, a curious Kind of “frozen” photograph, made without lenses, or with lenses merely as aids rather than essentials. Holography is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the recording medium as it was when recorded. The image changes as the position and orientation of the viewing system changes in exactly the same way as if the object was still present, this making the image three dimensional.
Holograms resemble no photograph or picture ever seen before, and they perform as no photograph ever did before them. Most look like confused scrambles of black and white grains or blotches, the light areas transparent, and dark opaque or nearly so. Some holograms might be mistaken for photographic negatives that had been ruined by water. Other holograms are quite clear and lacking in dark areas. They might be merely transparent sheets of glass. Yet all holograms, when placed at the correct angle in a beam of light, suddenly show images, as if they were magic windows. There, lying beyond the hologram, is and object, a group, or and entire scene, lifelike as no image created by ordinary photographs can be. It is lifelike above all because as the observer changes his point of view, the object in the hologram image are seen to move and shift in a way that the original object would.
One question you might be asking is who invented such a great way to capture and image and give it such realistic dimension? The man to credit for holograph would be the Hungarian physicist Dennis Gabor, work for which he received a Nobel Prize in Physics in 1971....