What is the science behind a hologram ?
A light sensitive material, hologram is chemically similar to a photographic emulsion. The holographic process records a pattern of infinitesimal lines. These are called interference pattern as they are created due to the interaction of two beams of laser light. After processing, the hologram is illuminated at the same angle as the reference beam used during the original exposure. The hologram re-creates the second beam, that is the object beam, to form a virtual 3-D image.
