121
edits
Changes
Jump to navigation
Jump to search
mLine 1:
Line 1: − +
no edit summary
The '''inverse square law''' predicts the intensity of a field at a given distance from a point source.
The '''inverse square law''' predicts the intensity of a field at a given distance from a point source.
Take a [[point source]] that is propagating something ([[light]], [[sound]], [[gravity]], [[electric field]], etc..) out. This
Take a [[point source]] that is propagating something ([[light]], [[sound]], [[gravity]], [[electric field]], etc..) out. Thus
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]].