Holography

1947

Holography

The book of science

Tom Sharp

Dennis Gabor optics

Holography

Full spectrum

Half a hologram

A holograph relies on the wave nature of light. It captures the interference pattern, where half of a split laser beam reflects off a scene and the other half, called the reference beam, bypasses the scene to interfere with the reflected light. To reconstruct the light from the scene, illuminate the hologram with a beam that is identical to the reference beam.

See also in The book of science:

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