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 James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish mathematician and scientist responsible for the classical theory of electromagnetic radiation, which was the first theory to describe electricity, magnetism and ligh ...

first suggested he had discovered such a projection system, but it was not reproduced until the 1950s, when

Edwin Land Edwin Herbert Land, ForMemRS, FRPS, Hon.MRI (May 7, 1909 – March 1, 1991) was an Russian-American scientist and inventor, best known as the co-founder of the Polaroid Corporation. He invented inexpensive filters for polarizing light, ...

accidentally noticed a similar effect while working on his

three-color system ''Sancai'' ()Vainker, 75 is a versatile type of decoration on Chinese pottery using glazes or slip, predominantly in the three colours of brown (or amber), green, and a creamy off-white. It is particularly associated with the Tang Dynasty (6 ...

of projection. Despite Land's later work on the subject, the

physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which rel ...

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.

External links

*http://www.greatreality.com/Color2Color.htm Display technology {{optics-stub