An Eidophor was a television projector used to create theatre-sized images. Its basic technology was the use of electrostatic charges to deform an oil surface. Electrostatics is the branch of physics that deals with the force exerted by a static (i. ... Oil is a generic term for organic liquids that are not miscible with water. ...

Developed by the Swiss Federal Institute of Technology and Dr. Edward Gretener A.G. (a company), Eidophors used an optical system somewhat similar to a conventional movie projector but substituted a slowly-rotating disk or dish for the film. The disk was covered with a thick oil and through the use of a scanned electron beam, electrostatic charges could be deposited onto the oil, causing the surface of the oil to deform. These deformations were then converted to light and dark areas by the optical system. As the disk rotated, a doctor blade smoothed the ripples in the oil, readying it for re-use on another television frame. ETH Zurich (from its German name Eidgenössische Technische Hochschule Zürich, ETHZ) is the Swiss Federal Institute of Technology in Zürich, Switzerland. ... A movie projector is an opto-mechanical device for displaying moving pictures. ... Properties The electron (sometimes called negatron; commonly represented as e−) is a subatomic particle. ... Doctor means teacher in Latin. ...

Simple Eidophors produced back-and-white images. More complex Eidophors produced sequential red, green, and blue fields, allowing the reproduction of a color image.

References

A 1952 magazine article discussing Eidophors (http://www.earlytelevision.org/eidophor.html) 1952 - Wikipedia /**/ @import /skins/monobook/IE50Fixes. ...