The Physics of Light -- Color

Adding and subtracting
An object appears red when viewed with white light because it reflects the red part of the white light and absorbs the blue and green parts. Then it will be bright when viewed in red light but dark when viewed with blue or green light.
Here are three pictures of Joe's favorite tie, made using red light, green light, and blue light. What color is each part of his tie?


Red Light	Green Light	Blue Light

We have turned the pictures into black and white so that you will focus on the brightness and darkness, and not on the colors themselves.

	What color is region A? What color is region B? What color is region C? What color is region D? What color is region E?		The various areas of the tie are red orange yellow light green dark blue black white

...and the answer is...

About color

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