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Cal State Fullerton, Department of Physics - Inverse Square
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inverse square model
This is an important principle in photometry and in the sutdy of gravitational, electrical, and magnetic fields.
Level one shows the first distance from the origin, therefore 1^2 = 1 square area.
Level two is two times the distance of level 1 from the origin, therefore 2^2 = 4 squares of area.
Level three is three times the distance of level 1 from the origin, therefore 3^2 = 9 squares of area.
After showing the above, note that intensity (of the originâ€™s energy) diminishes by the inverse of distance squared.
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