| 单词 | flame spectrum |
| 释义 | > as lemmasflame spectrum flame spectrum n. a spectrum of the light produced when a substance is vaporized in an otherwise non-luminous flame. ΘΚΠ 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 1862 Chem. News 26 Apr. 234/1 The broad band in the flame-spectrum of calcium named Ca β, is replaced in the spectrum of the intense calcium-spark by five green lines. 1907 Proc. Royal Soc. A. 79 243 The spectra of the glow from metallic vapours have been photographed repeatedly in the oxy~hydrogen flame spectra of all the alkali metal salts. 1962 R. E. Dodd Chem. Spectrosc. i. 12 Flame spectra are..either line spectra of neutral atoms or bands of very closely spaced lines arising from molecules. < as lemmas |
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