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A law stating that the intensity of an effect such as illumination or gravitational force changes in inverse proportion to the square of the distance from the source.
‘Electromagnetism has a classical inverse square law (like Newton's classical law of gravitational attraction), and infinite range.’
‘Hooke replied to Newton that his own theory involved an inverse square law for gravitational attraction.’
‘The law that Newton discovered was the inverse square law of gravitation - a simple law, but one with great mathematical beauty.’
‘He demonstrated an inverse square law for such forces and went on to examine perfect conductors and dielectrics.’
‘Airy, the Astronomer Royal, believed in another popular theory, namely that the inverse square law of gravitation began to break down over large distances.’