What is holography?

Question

What is holography?

Answer 1

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 is if the object were still present, thus making the recorded image (hologram) appear three dimensional. Holograms can also be made using other types of waves.

you can read more on:

http://en.wikipedia.org/wiki/Holography

Answer 2

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.