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nutritionist fârešgar Fr.: nutritioniste A person who is trained or expert in the science of nutrition. |
nutritive fârandé Fr.: nutritif, nourrissant 1) Serving to nourish; providing nutriment; nutritious. Adjective and agent noun from L. nutrire, → nourish. |
nyctalopia šabkuri (#) Fr.: nyctalopie Same as → night blindness; opposite of → hemeralopia. L.L. nyctalopia, from Gk. nukt, → night + al(aos) "blind" + -opia, akin to ope "view, look," ops "eye." Šabkuri, from šab, → night, + kuri "blindness," from kur, → blind. |
Nyquist formula disul-e Nyquist Fr.: formule de Nyquist The mean square noise voltage across a resistance in thermal equilibrium is four times the product of the resistance, Boltzmann's constant, the absolute temperature, and the frequency range within which the voltage is measured. → Johnson-Nyquist noise. Named after Harry Nyquist (1889-1976), a Swedish-born American physicist, who made important contributions to information theory. → Johnson-Nyquist noise; → formula. |
Nyquist frequency basâmad-e Nyquist Fr.: fréquence de Nyquist The highest frequency that can be determined in a Fourier analysis of a discrete sampling of data. → Nyquist formula; → frequency. |
Nyquist-Shannon sampling theorem farbin-e nemunân-giri-ye Nyquist-Shannon Fr.: théorème d'échantillonnage de Nyquist-Shannon The minimum number of resolution elements required to properly sample a signal, such as a star image, without causing erroneous effects known as aliasing. For electronic imaging, this number is generally taken as 2 pixels across the seeing disk diameter at the half intensity points. Also called → Shannon's sampling theorem and → sampling theorem. Named after Harry Nyquist (1889-1976), a Swedish-born American physicist, who made important contributions to information theory, and Claude Elwood Shannon (1916-2001), an American mathematician and pioneer of information theory; → theorem. |
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