Two-color system
Encyclopedia
The two-color system of projection
is a name given to a variety of methods of projecting a full-color image using (only) two different single-color projectors. James Clerk Maxwell
first suggested he had discovered such a projection system, but it was not reproduced until the 1950s, when Edwin Land accidentally noticed a similar effect while working on his three-color system of projection.
Despite Land's later work on the subject, the physics
behind the success of this system of projection (and similar methods of apparent full-color projection involving only one color of light, sometimes in different polarizations) is not clearly understood since it involves not only the projected light but also the human visual system's response to it.
Movie projector
A movie projector is an opto-mechanical device for displaying moving pictures by projecting them on a projection screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras.-Physiology:...
is a name given to a variety of methods of projecting a full-color image using (only) two different single-color projectors. James Clerk Maxwell
James Clerk Maxwell
James Clerk Maxwell of Glenlair was a Scottish physicist and mathematician. His most prominent achievement was formulating classical electromagnetic theory. This united all previously unrelated observations, experiments and equations of electricity, magnetism and optics into a consistent theory...
first suggested he had discovered such a projection system, but it was not reproduced until the 1950s, when Edwin Land accidentally noticed a similar effect while working on his three-color system of projection.
Despite Land's later work on the subject, the physics
Physics
Physics is a natural science that involves the study of matter and its motion through spacetime, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.Physics is one of the oldest academic...
behind the success of this system of projection (and similar methods of apparent full-color projection involving only one color of light, sometimes in different polarizations) is not clearly understood since it involves not only the projected light but also the human visual system's response to it.