Black, unremarkable glass plate. But here you expose it to the light, turn it, find the desired angle of view - and a three-dimensional image appears on it. This is a holographic image, the technical embodiment of a wonderful scientific idea that arose on the basis of the doctrine of light waves, their interference and diffraction. The book tells how this idea arose, who implemented it, where optical holography is applicable and what hopes scientists and specialists of the national economy associate with its further development....