1. Fourier - Noun
2. Fourier - Proper noun
French mathematician who developed Fourier analysis and studied the conduction of heat (1768-1830)
French sociologist and reformer who hoped to achieve universal harmony by reorganizing society (1772-1837)
Source: WordNetAccordingly, the technique of "Fourier transform spectroscopy" can be used both for measuring emission spectra (for example, the emission spectrum of a star), and absorption spectra (for example, the absorption spectrum of a liquid). Source: Internet
A data-processing technique called Fourier transform turns this raw data into the desired result (the sample's spectrum): Light output as a function of infrared wavelength (or equivalently, wavenumber ). Source: Internet
A Fourier series, however, can be used only for periodic functions, or for functions on a bounded (compact) interval. Source: Internet
Alternatively, the entire wavelength range is measured using a Fourier transform instrument and then a transmittance or absorbance spectrum is generated using a dedicated procedure. Source: Internet
A DCT is similar to a Fourier transform in the sense that it produces a kind of spatial frequency spectrum. Source: Internet
An example of a rapidly falling function is for any positive n, λ, β. To study the Fourier transform, it is best to consider complex-valued test functions and complex-linear distributions. Source: Internet