Noun
spectrum of electromagnetic radiation emitted by a self-luminous source
Source: WordNetAccordingly, the technique of "Fourier transform spectroscopy" can be used both for measuring emission spectra (for example, the emission spectrum of a star), and absorption spectra (for example, the absorption spectrum of a liquid). Source: Internet
The mercury vapor emission spectrum is dominated by a short-wave UV line at 254 nm (which provides most of the energy to the phosphors), accompanied by visible light emission at 436 nm (blue), 546 nm (green) and 579 nm (yellow-orange). Source: Internet
Beta emission spectrum Beta spectrum of 210 Bi. Source: Internet
Dyson's proposal did not detail how such a system would be constructed, but focused only on issues of energy collection, on the basis that such a structure could be distinguished by its unusual emission spectrum in comparison to a star. Source: Internet
For example, the emission spectrum of a gas-discharge lamp can be altered by filling it with (mixtures of) gases with different electronic energy level configurations. Source: Internet
In contrast with atoms, which have a discrete emission spectrum, quantum dots can be tuned continuously by changing their size. Source: Internet