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Useful english dictionary. 2012.
Natural trumpet — copy by Francisco Pérez after Johann Leonhard Ehe III A natural trumpet is a valveless brass instrument that is able to play the notes of the harmonic series. Contents 1 History … Wikipedia
Natural horn — in the V A Museum, London Classification Brass instrument The natural horn is a musical instrument that is the ancestor of the modern day horn, and is differentiated by its lack of valves. It consist … Wikipedia
Natural scale — may refer to: Diatonic scale, including the major and natural minor scales Harmonic series (music), the series of pitches produced by a natural horn Nondimensionalization, the removal of units from a mathematical equation The particular diatonic… … Wikipedia
Harmonic series (mathematics) — In mathematics, the harmonic series is the divergent infinite series: Its name derives from the concept of overtones, or harmonics in music: the wavelengths of the overtones of a vibrating string are 1/2, 1/3, 1/4, etc., of the string s… … Wikipedia
Harmonic number — The term harmonic number has multiple meanings. For other meanings, see harmonic number (disambiguation) .In mathematics, the n th harmonic number is the sum of the reciprocals of the first n natural numbers::H n=… … Wikipedia
Harmonic major scale — In music theory, the harmonic major scale is a musical scale which found occasional use during the common practice era and is now often employed, particularly in jazz. It may be considered as a major scale with the sixth degree flattened, or the… … Wikipedia
Harmonic — This article is about the components of periodic signals. For other uses, see Harmonic (disambiguation). The nodes of a vibrating string are harmonics. A harmonic of a wave is a component frequency of the signal that is an integer multiple of the … Wikipedia
harmonic analysis — Math. 1. the calculation of Fourier series and their generalization. 2. the study of Fourier series and their generalization. Also called Fourier analysis. [1865 70] * * * ▪ mathematics mathematical procedure for describing and analyzing… … Universalium
natural — adjective 1》 existing in or derived from nature; not made, caused by, or processed by humans. ↘having had a minimum of processing or preservative treatment. ↘(of fabric) unbleached and undyed; off white. 2》 in accordance with nature;… … English new terms dictionary
Natural experiment — A natural experiment is an observational study in which the assignment of treatments to subjects has been haphazard: That is, the assignment of treatments has been made by nature , but not by experimenters. Thus, a natural experiment is not a… … Wikipedia
