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Energy and Intensity of Light

Some characteristics of light are modeled by a wave. (Others are modeled by particles.)

The wavelength of the light corresponds to energy.

The amplitude of the light corresponds to intensity.

Red light has a longer wavelength (and less energy) than blue light.

A bright red light provides more intensity than a weak red light.


The wave below has an amplitude of 1.
The wave below has a wavelength of 2.



The wave below has an amplitude of 2.
The wave below has a wavelength of 2.




The wave below has an amplitude of 1.
The wave below has a wavelength of 1.








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Last Revised 02/03/98.
Copyright ©1998 by William L. Dechent. All rights reserved.