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What does ISL stand for?

ISL stands for Inverse Square Law (physics)


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Samples in periodicals archive:

1 Introduction Newton's inverse square law of gravity, when expressed in terms of an acceleration field g(r, t), has the differential form: [nabla] x g = -4[pi]G[rho], [nabla] x g = 0 (1) where G is the gravitational constant and [rho] is the real matter density.
The statement at the bottom of the first column on Page 15, "Using the inverse square law, intensity is reduced by one quarter every time the distance is doubled," is not correct.
Scientists raised the idea of a fifth force in 1986 after finding hints that the gravity inside an Australian mine shaft did not follow Newton's inverse square law.
At stake is the accuracy of Newton's inverse square law of gravity, which holds that the gravitational attraction between two bodies is proportional to one over the square of the distance separating the bodies.
Nevertheless those reports motivated the Greenland, Nevada and Ocean experiments, as well as above-ground tower experiments [19], all with the assumption that the non-Newtonian effects were being caused by a modification to Newton's inverse square law by an additional short-range force--which also involved the notion of a possible "5th-force" [21].