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mass number
(Encyclopedia)mass number, often represented by the symbol A, the total number of nucleons (neutrons and protons) in the nucleus of an atom. All atoms of a chemical element have the same atomic number (number of pr...imaginary number
(Encyclopedia)imaginary number: see number.index number
(Encyclopedia)index number, in econometrics, a figure reflecting a change in value or quantity as compared with a standard or base. The base usually equals 100 and the index number is usually expressed as a percent...algebraic number
(Encyclopedia)algebraic number: see number.complex number
(Encyclopedia)complex number: see number.transcendental number
(Encyclopedia)transcendental number: see number. ...Reynolds number
(Encyclopedia)Reynolds number [for Osborne Reynolds], dimensionless quantity associated with the smoothness of flow of a fluid. It is an important quantity used in aerodynamics and hydraulics. At low velocities flu...real number
(Encyclopedia)real number: see number.rational number
(Encyclopedia)rational number: see number.oxidation number
(Encyclopedia)oxidation number or oxidation state: see valence. ...Browse by Subject
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