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|quote= }}</ref>
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Take a [[point source]] that is propagating something ([[light]], [[sound]], [[gravity]], [[electric field]], etc..) out. Thus
Take a [[point source]] that is propagating something ([[light]], [[sound]], [[gravity]], [[electric field]], etc..) out.
The inverse square law can be derived by looking at the surface area of a [[sphere]] of radius ''r''. The surface area of a sphere is 4πr<sup>2</sup>. As the radius increases, the surface area of the sphere goes up with the square of the radius and the intensity of the phenomena will be inversely proportional to the [[surface area]].
The inverse square law can be derived by looking at the surface area of a [[sphere]] of radius ''r''. The surface area of a sphere is 4πr<sup>2</sup>. As the radius increases, the surface area of the sphere goes up with the square of the radius and the intensity of the phenomena will be inversely proportional to the [[surface area]].