This document discusses holography and its history. It was invented in 1947 by Dennis Gabor, who received the Nobel Prize in 1971. Holography allows light scattered from an object to be recorded and later reconstructed as a three-dimensional image without the need for glasses or a projection screen. The document outlines the timeline of holography developments and describes how holograms work through the recording and reconstruction of light fields. Potential applications of holography mentioned include gaming, space, the military, virtual reality, marketing, entertainment displays, and future scopes.

1. HOLOGRAPHY
BY
J.B.ANU SELVAMATHI
ECE
feb4,2015

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.

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.

7. Types of hologram
 Reflex hologram
 Transmission hologram
 Computer generated holograms.

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

11. Gaming

12. Space

13. Military

14. Virtual realitity

15. Marketing

16. Entertainment display

17. `
Future scope

20. WORDS OF THE DAY
 Fay - strange
 Arcane - secret
 Whodunnit - a story/play about detection
of crime.
 Hap - luck/chance.