| 单词 | absorption spectrum |
| 释义 | > as lemmasabsorption spectrum absorption spectrum n. Physics a spectrum of electromagnetic radiation transmitted through a substance, showing dark lines or bands due to absorption at specific wavelengths.Analysis of such spectra can be used to determine the chemical composition of a body (e.g. a star), as particular atoms and molecules have a characteristic set of wavelengths at which they absorb electromagnetic radiation. ΘΚΠ the world > matter > physics > atomic physics > decomposition of light, spectrum > [noun] > system of absorption bands absorption spectrum1864 the world > matter > physics > electromagnetic radiation > light > chromatism > [noun] > spectrum > types of Fraunhofer spectrum1837 gas spectrum1859 interference spectrum1860 flame spectrum1862 absorption spectrum1864 fluorescence spectrum1867 band spectrum1869 comparison spectrum1877 infra-red1881 emission spectrum1888 X-ray spectrum1910 1864 London, Edinb. & Dublin Philos. Mag. 4th Ser. 27 45 I endeavoured last year to establish a comparison of the absorption spectra of iodine, bromine, and hyponitric acid, with the spectra of the flames in which these vapours are incandescent. 1926 Science 4 June 576/2 The large number of absorption bands exhibited by both neodymium and samarium would tend to mask its [sc. illinium's] absorption spectrum. 2007 M. Dowd Thank God Evol. (2008) v. 90 Scientists can study the absorption spectra to see which chemical elements in the star's own body are absorbing distinctive wavelengths of light. < as lemmas |
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