Colored light shadows color student activity

colored shadows has been a favorite student investigation and can be done with LED flashlights, or on a smaller scale little finger lights. It is a fascinating demonstration of showing how white light is a combination of different wavelengths for Color addition. The use of prism or “rainbow glasses“ are able to separate white light in 7 different colors and once separated cannot be broken down a further. Color subtraction is also demonstrated using food coloring showing how colors block out all the other wavelengths except the one shown. This is a reposting of this video, it was inadvertently removed from this channel due to my inability to follow simple YouTube directions on deleting videos. Thank you to my several friendly subscribers that informed me it was missing.