equivalence relation — (or equivalence class ) A relation which is transitive, symmetric, and reflexive divides its field into exclusive classes of things. Within each class everything bears the relation to everything else, and nothing bears it to anything in a… … Philosophy dictionary
Mass–energy equivalence — E=MC2 redirects here. For other uses, see E=MC2 (disambiguation). 4 meter tall sculpture of Einstein s 1905 E = mc2 formula at the 2006 Walk of Ideas, Berlin, Germany In physics, mass–energy equivalence is the concept that the … Wikipedia
hydraulic equivalence — ▪ geology size–density relationship that governs the deposition of mineral particles from flowing water. Two particles of different sizes and densities are said to be hydraulically equivalent if they are deposited at the same time under a… … Universalium
Planck scale — In particle physics and physical cosmology, the Planck scale is an energy scale around 1.22 × 1028 eV (which corresponds by the mass–energy equivalence to the Planck mass 2.17645 × 10−8 kg) at which quantum effects of gravity become strong. At… … Wikipedia
Moment magnitude scale — Part of a series on earthquakes Types Foreshock • Aftershock • Blind thrust Doublet • Interplate • … Wikipedia
Kardashev scale — The Kardashev scale is a method of measuring a civilization s level of technological advancement. It was first proposed in 1964 by the Soviet astronomer Nikolai Kardashev. The scale has three designated categories called Type I , II , and III .… … Wikipedia
Enharmonic scale — An enharmonic scale is a musical scale in which there is no exact equivalence between a sharpened note and the flattened note it is enharmonically related to.As an example, F sharp and G flat are generally equivalent in a chromatic scale, but… … Wikipedia
Шкала эквивалентности — EQUIVALENCE SCALE Коэффициент или весовой множитель, используемый для оценки уровня дохода и потребления, необходимого для того, чтобы домохозяйства, имеющие разный достаток, достигли определенного уровня жизни. В основе метода лежит гипотеза о… … Словарь-справочник по экономике
Grade (education) — GPA redirects here. For other uses, see GPA (disambiguation). Academic grading Africa Egypt • Kenya • Morocc … Wikipedia
Diatonic function — Scale degree names[1] (C major scale) … Wikipedia
Mass — This article is about the scientific concept. For the substance of which all physical objects consist, see Matter. For other uses, see Mass (disambiguation). Classical mechanics … Wikipedia
