This site answers several common questions about rainbows, their formation, and their appearance. Diagrams along with descriptions are provided in each section. Example experiments are included.

This Exploratorium site contains an activity about afterimages, the lingering images seen after staring at a particular stimulus. Participants look at bird shapes of different colors for a while and then look away,...

This activity demonstrates how white light, such as that from an overhead projector, is broken up into its component colors by a diffraction grating. Students will learn the relationships between light's wavelength,...

This is the Chandra X-ray Observatory photo album website. It begins with an introduction on the electromagnetic spectrum, focusing on X-rays in particular. It also contains information on false color images. The images...

Color theory has been worked on by a number of individuals over the years, and those with an interest in the field include artists, scientists, and of course, interior designers. Janet Ford, a web designer in...