Some current views on holography

Holography, the science of producing images by wavefront reconstruction, has been receiving increased attention during the past few years, chiefly because of achievements made possible by the development of the laser as a coherent light source. By holographic techniques, three-dimensional objects may be reconstructed as three-dimensional images, in full color, and magnified or reduced in size, as desired. This article describes the basic principles of holography, as well as some of the work being done in this field, including experiments with volume holograms and hologram interferometry.