HOLOGRAM

Hologram is a three dimensional image formed by interference of light beam from a laser other coherent light source.

Holography is the science and practice of making holograms.

How it works?

Holography is a technique that enables a light field, which is generally the product of a light source scattered off objects, to be recorded and later reconstructed when the original light field is no longer present, due to the absence of the original objects. Holography can be thought of as somewhat similar to sound recording, whereby a sound field created by vibrating matter like musical instruments or vocal cords, is encoded in such a way that it can be reproduced later, without the presence of the original vibrating matter.