2. What is holography
It allows the light scattered from an object to be
recorded and later reconstructed.
It is advanced form of photography
The image is recorded in three dimension..
3. Why holography
Glasses free 3d display
No need for projection screen.
Life like images.
Interactive display.
High resolution 3
dimensional recording
4. History
Dennis Gabor-father of holography.
Dennis wrote a paper in 1947 .
The most interesting thing about all this is that
laser light had not even been invented
yet,when he wrote his paper.
He received noble prize in physics in 1971.
5.
6. Time line of holography
1947:dennis gabor _theory of holography.
1960:pulsed ruby laser
1962:white light reflection hologram.
1983:master card.
2009:interactive holographic.
2010:moving 3d hologram.
8. How hologram works
The time varying light field of a scene
with all its physical properties is to be
recorded and then regenerated.
Hence the working of holography is
divided into two phases:
Recording
Reconstruction