| LC control no. | sh2020008832 |
|---|---|
| Topical heading | Inverse-square law |
| Variant(s) | ISL (Inverse-square law) |
| See also | Physical laws |
| Found in | Work cat.: Lee, J.G. A Fourier-Bessel test of the gravitational inverse-square law, 2020: p. 1 (Gravity was the first physical force with a mathematical description, where the inverse-square law (ISL) was written down by Newton in the late 1600's. And even General Relativity, Einstein's classical theory of gravity, must match the ISL in the limit of weak gravitational fields. ... This work presents the latest effort by the Eöt-Wash group to search for these hypothetical new forces by testing the ISL for gravity at the shortest possible distance. ... Throughout this chapter and the entire document, we characterize any violation of the Newtonian ISL as an additional Yukawa interaction) Wikipedia, Oct. 23, 2020: Inverse-square law (In science, an inverse-square law is any scientific law stating that a specified physical quantity is inversely proportional to the square of the distance from the source of that physical quantity; Occurrences: Gravitation; Electrostatics; Light and other electromagnetic radiation; Sound in a gas; HyperPhysics website (Dept. of Physics and Astronomy, Georgia State University), Oct. 23, 2020 (Inverse Square Law, General: Any point source which spreads its influence equally in all directions without a limit to its range will obey the inverse square law. This comes from strictly geometrical considerations. The intensity of the influence at any given radius r is the source strength divided by the area of the sphere. Being strictly geometric in its origin, the inverse square law applies to diverse phenomena. Point sources of gravitational force, electric field, light, sound or radiation obey the inverse square law) <http://hyperphysics.phy-astr.gsu.edu/hbase/Forces/isq.html> Energy education website, Oct. 23, 2020 (Inverse square law: A number of physical properties (like the force between two charges) get smaller as they get farther apart in a way that can be represented by an inverse square law. This means that the intensity of the property decreases in a particular way as the distance between interacting objects increases. Specifically, an inverse square law says that intensity equals the inverse of the square of the distance from the source) <https://energyeducation.ca/encyclopedia/Inverse_square_law> A dictionary of physics, 2019 (inverse-square law: A law in which the magnitude of a physical quantity is proportional to the reciprocal of the square of the distance from the source of that property. Newton's law of gravitation and Coulomb's law are both examples. The inverse-square law has very special mathematical and physical properties (see e.g. Fock degeneracy) that other inverse powers of the distance do not have) Thewlis, J. Concise dictionary of physics and related subjects, 1979 (Inverse Square Law. Describes (a) the law which states that the intensity of radiation (acoustic or electromagnetic) falls off inversely as the square of the distance from a point source of radiation or (b) the law which states that the force between two points (e.g. the gravitational force, the force between two electrical charges or two magnetic poles) is inversely proportional to the square of the distance between them) |
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