The Holographic Universe by Michael Talbot
Tags: non-fictionThe premis of The Holographic Universe is not that the universe is a literal holograph, but that a holograph may be the best metaphor for understanding the universe.
Michael Talbot describes how holographs are made: using mirrors and lenses, you split a laser beam into two parts, the object beam and the reference beam. The object beam reflects off the object you want to record (a strawberry, or a bird, or whatever) onto holographic film, while the reference beam hits the same film at the same time from a different angle. The film records the interference patterns from these two beams.