| 单词 | emission spectrum |
| 释义 | emission spectrum in British Englishnoun the continuous spectrum or pattern of bright lines or bands seen when the electromagnetic radiation emitted by a substance is passed into a spectrometer. The spectrum is characteristic of the emitting substance and the type of excitation to which it is subjected Compare absorption spectrumemission spectrum in American Englishnoun Physics the spectrum formed by electromagnetic radiations emitted by a given source, characteristic of the source and the type of excitation inducing the radiations Word origin [1885–90]This word is first recorded in the period 1885–90. Other words that entered Englishat around the same time include: classified, foregut, roller coaster, twofer, zoomExamples of 'emission spectrum' in a sentence |
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