make it a principle
31Equivalence principle — General relativity|cTopic=Fundamental conceptsThe equivalence principle is one of the fundamental background concepts of the General Theory of Relativity. For the overall context, see General relativity.In the physics of relativity, the… …
32Uncertainty principle — In quantum physics, the Heisenberg uncertainty principle states that locating a particle in a small region of space makes the momentum of the particle uncertain; and conversely, that measuring the momentum of a particle precisely makes the… …
33Maupertuis' principle — In classical mechanics, Maupertuis principle (named after Pierre Louis Maupertuis) is an integral equation that determines the path followed by a physical system without specifying the time parameterization of that path. It is a special case of… …
34Peter Principle — For the BBC sitcom, see The Peter Principle (TV series). The Peter Principle states that in a hierarchy every employee tends to rise to his level of incompetence , meaning that employees tend to be promoted until they reach a position at which… …
35Pigeonhole principle — A photograph of pigeons in holes. Here there are n = 10 pigeons in m = 9 holes, so by the pigeonhole principle, at least one hole has more than one pigeon: in this case, both of the top corner holes contain two pigeons. The principle says nothing …
36Coulter principle — Coulter patented several different implementations of the Coulter Principle. Image taken from US Patent #2,656,508. The term “Coulter Principle” refers to the use of an electric field for counting and sizing dilute suspensions of particles in… …
37Kuzari Principle — The Kuzari Principle or National Revelation is a line of philosophic reasoning derived from the medieval work Kuzari. This principle claims to logically prove the historicity of major events recorded in the Bible from the nature of the belief in… …
38Huygens–Fresnel principle — Wave refraction in the manner of Huygens …
39Cosmological principle — See also: Friedmann Lemaître Robertson Walker metric and Large scale structure of the cosmos Physical cosmology …
40An Essay on the Principle of Population — Infobox Book | name = An Essay on the Principle of Population image caption = Title page of the original edition of 1798. author = Thomas Robert Malthus translator = illustrator = cover artist = country = England language = English genre =… …
