Qui a inventé l’holographie ?
Dennis Gabor
Holographie/Inventeurs
C’est en 1971 que le physicien britannique d’origine hongroise Dennis Gabor reçoit le prix Nobel de physique pour l’invention de l’holographie. Contrairement à une photographie qui reproduit uniquement les formes et les couleurs, un hologramme enregistre également le volume, en trois dimensions.
What is holography and how does it work?
- Holography may be better understood via an examination of its differences from ordinary photography: A hologram represents a recording of information regarding the light that came from the original scene as scattered in a range of directions rather than from only one direction, as in a photograph.
What is acoustic holography and how is it used?
- Acoustic holography is a method used to estimate the sound field near a source by measuring acoustic parameters away from the source via an array of pressure and/or particle velocity transducers. Measuring techniques included within acoustic holography are becoming increasingly popular in various fields,…
What is the difference between dynamic and Electronic Holography?
- Dynamic holography. This compensates for the fact that the recording time, which is in the order of a microsecond, is still very long compared to the processing time of an electronic computer. The optical processing performed by a dynamic hologram is also much less flexible than electronic processing.
What happens when a hologram is cut in half?
- When a hologram is cut in half, the whole scene can still be seen in each piece. This is because, whereas each point in a photograph only represents light scattered from a single point in the scene, each point on a holographic recording includes information about light scattered from every point in the scene.
