Autochrome
The Lumière brothers devised and patented Autochrome in 1903. A glass plate was coated with red, green, and blue potato starch and a black-and-white silver halide emulsion. In the 1930s, Kodachrome and Agfacolor replaced the process.
A color-processed, printed-on-glass picture can be viewed by holding it up to the light or projecting light through it onto a wall or screen. This approach was popular from 1904 to 1940. The Lumiere brothers helped grow cinema and the projection of moving transparent images onto a screen.
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