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Fourier analysis

noun, Physics, Mathematics.
the expression of any periodic function as a sum of sine and cosine functions, as in an electromagnetic wave function.
Compare Fourier series.
Origin of Fourier analysis
First recorded in 1925-30; named after J.B.J. Fourier Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for Fourier analysis

Fourier analysis

the analysis of a periodic function into its simple sinusoidal or harmonic components, whose sum forms a Fourier series
Word Origin
C19: named after Baron Jean Baptiste Joseph Fourier (1768–1830), French mathematician, Egyptologist, and administrator
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Fourier analysis in Science
Fourier analysis  
The branch of mathematics concerned with the approximation of periodic functions by the Fourier series and with generalizations of such approximations to a wider class of functions.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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