英语词汇“black-body brightness temperature”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

brightness temperature n. Astronomy and Physics (with reference to a body emitting electromagnetic radiation at a given frequency) the temperature that a black body at thermal equilibrium with its surroundings would need to be in order to radiate with the same intensity at that frequency (more fully black-body brightness temperature).An earlier term is black-body temperature.The brightness temperature provides a lower estimate of the real temperature in cases where a direct measurement is difficult to obtain.

ΚΠ

1917 W. E. Forsythe in Gen. Electric Rev. Sept. 751/2 The brightness temperature S must be ascribed to a wave-length such that the energy emitted by a black body per unit area at temperature T for this wave-length will equal that emitted per unit area by the source for the same wave-length.

1960 Proc. National Acad. Sci. U.S.A. 46 6 (caption) Contours of brightness temperature in the 21-cm emission line in the central region of the Galactic System.

2015 M. Tedesco et al. in M. Tedesco Remote Sensing Cryosphere (new ed.) vi. 102 Brightness temperature recorded from dry snow is lower than that recorded from wet snow.

单词	black-body brightness temperature
释义	> as lemmas black-body brightness temperature brightness temperature n. Astronomy and Physics (with reference to a body emitting electromagnetic radiation at a given frequency) the temperature that a black body at thermal equilibrium with its surroundings would need to be in order to radiate with the same intensity at that frequency (more fully black-body brightness temperature).An earlier term is black-body temperature.The brightness temperature provides a lower estimate of the real temperature in cases where a direct measurement is difficult to obtain. ΚΠ 1917 W. E. Forsythe in Gen. Electric Rev. Sept. 751/2 The brightness temperature S must be ascribed to a wave-length such that the energy emitted by a black body per unit area at temperature T for this wave-length will equal that emitted per unit area by the source for the same wave-length. 1960 Proc. National Acad. Sci. U.S.A. 46 6 (caption) Contours of brightness temperature in the 21-cm emission line in the central region of the Galactic System. 2015 M. Tedesco et al. in M. Tedesco Remote Sensing Cryosphere (new ed.) vi. 102 Brightness temperature recorded from dry snow is lower than that recorded from wet snow. extracted from brightnessn. < as lemmas
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