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Color of light. White light is light that has all colors in it. Sunlight is white light. White light is broken down into the colors of the spectrum by a prism. Color by reflection. The color an object appears depends on what color light is reflected back to the observer.
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Color of light • White light is light that has all colors in it. • Sunlight is white light. • White light is broken down into the colors of the spectrum by a prism.
Color by reflection • The color an object appears depends on what color light is reflected back to the observer. • What color light is reflected back by a green shirt? • What color light is reflected back by a white shirt? By a black shirt?
Color by transmission • If white light is shown through a green glass filter, all red and blue light is absorbed by the glass and green light is transmitted. • Brightest colors are yellow and green. • Least bright are red and blue or violet.
Color by addition • Light colors are additive, meaning that you add the colors of light to determine new light. • If you add blue and green, you get _____. • If you add blue and red, you get ______. • If you add green and red, you get ____.