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What holograms are and why they matter in XR

The Ghost Howls

It is like if the film was able to record the image created by the sum of the two types or rays that get cast onto it: the reference one, and the object one. And if I send the reference beam B1 on the pattern D on the film, I’m able to re-obtain the object beam B2. For my eyes, it is like if the object was really there.