noun, Physics, Mathematics.
the expression of any periodic function as a sum of sine and cosine functions, as in an electromagnetic wave function.
the analysis of a periodic function into its simple sinusoidal or harmonic components, whose sum forms a Fourier series
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.
[foo r-ee-uh-riz-uh m] /ˈfʊər i əˌrɪz əm/ noun 1. the social system proposed by François Marie Charles Fourier, under which society was to be organized into phalanxes or associations, each large enough for all industrial and social requirements. /ˈfʊərɪəˌrɪzəm/ noun 1. the system of Charles Fourier under which society was to be organized into self-sufficient […]
noun, Mathematics. 1. a mapping of a function, as a signal, that is defined in one domain, as space or time, into another domain, as wavelength or frequency, where the function is represented in terms of sines and cosines. noun 1. an integral transform, used in many branches of science, of the form F(x) = […]
[fawr-in-hand, fohr-] /ˈfɔr ɪnˌhænd, ˈfoʊr-/ noun 1. a long necktie to be tied in a slipknot with the ends left hanging. 2. a vehicle drawn by four horses and driven by one person. 3. a team of four horses. adjective 4. of or relating to a four-in-hand. noun 1. Also called tally-ho. a road vehicle […]
[fawr-leyn, fohr-] /ˈfɔrˌleɪn, ˈfoʊr-/ adjective 1. (of a highway) having two lanes for traffic in each direction: a four-lane thruway. noun 2. Also, four-laner [fawr-ley-ner, fohr-] /ˈfɔrˈleɪ nər, ˈfoʊr-/ (Show IPA). a four-lane highway.