Color Management and Why We Need It - Color Management for Photographers - page 13

Fig. 1-5 Light is a form of electromagnetic radiation. After being passed through a prism the visible light spectrum can be seen from violet
(400 nm) to red (700 nm). This illustration also shows how both additive and subtractive primaries can produce white or black as well as
many other colors. (Illustration Courtesy of GretagMacbeth)
playing with prisms. I recall an exercise with a prism during my ele-
mentary school days. The lesson showed that by passing white light
through a prism, we are able to see the individual frequencies that com-
prise it. These frequencies show themselves as the colors of the rainbow.
Newton's prism sorted light rays by their wavelength since shorter wave-
lengths are bent (refracted) more than longer wavelengths. My dad