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  • Quantity — is a kind of property which exists as magnitude or multitude. It is among the basic classes of things along with quality, substance, change, and relation. Quantity was first introduced as quantum, an entity having quantity. Being a fundamental… …   Wikipedia

  • Physical quantity — A physical quantity is a physical property that can be quantified. This means it can be measured and/or calculated and expressed in numbers. The value of a physical quantity Q is expressed as the product of a numerical value { Q } and a physical… …   Wikipedia

  • Gravitational wave — In physics, a gravitational wave is a fluctuation in the curvature of spacetime which propagates as a wave, traveling outward from a moving object or system of objects. Gravitational radiation is the energy transported by these waves. Important… …   Wikipedia

  • Chinese classifier — See also: List of Chinese classifiers simplified traditional …   Wikipedia

  • Philosophiæ Naturalis Principia Mathematica —   Title page of Principia , first edition (1687) Original title …   Wikipedia

  • Katal — The katal (symbol: kat) is the SI unit of catalytic activity. [cite journal |author=Nomenclature Committee of the International Union of Biochemistry (NC IUB) |title=Units of Enzyme Activity |journal=Eur. J. Biochem. |volume=97 |pages=319–20… …   Wikipedia

  • Correspondence principle — This article discusses quantum theory and relativity. For other uses, see Correspondence principle (disambiguation). In physics, the correspondence principle states that the behavior of systems described by the theory of quantum mechanics (or by… …   Wikipedia

  • Chinese measure word — In the modern Chinese languages, measure words or classifiers (zh tsp|t=量詞|s=量词|p=liàngcí; Cantonese (Yale): leung4 chi4 ) are used along with numerals to define the quantity of a given object or objects, or with this / that to identify specific… …   Wikipedia

  • Minkowski-Steiner formula — In mathematics, the Minkowski Steiner formula is a formula relating the surface area and volume of compact subsets of Euclidean space. More precisely, it defines the surface area as the derivative of enclosed volume in an appropriate sense.The… …   Wikipedia

  • Minkowski–Steiner formula — In mathematics, the Minkowski–Steiner formula is a formula relating the surface area and volume of compact subsets of Euclidean space. More precisely, it defines the surface area as the derivative of enclosed volume in an appropriate sense. The… …   Wikipedia

  • Pierre Bouguer — (February 16, 1698 ndash; August 15, 1758) was a French mathematician and astronomer. He is also known as the father of naval architecture .His father, Jean Bouguer, one of the best hydrographers of his time, was regius professor of hydrography… …   Wikipedia

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