“doublet”的概念、定义、翻译、参考文献-科学参考

　

单词	doublet
释义	doublet Physics 1. A pair of optical lenses of different shapes and made of different materials used together so that the chromatic aberration produced by one is largely cancelled by the reverse aberration of the other. 2. A pair of associated lines in certain spectra, e.g. the two lines that make up the sodium D line. Astronomy 1. Two closely spaced lines in a spectrum that are due to the same element, for example the sodium doublet at 589.0 and 589.6 nm (the sodium D lines). A doublet results from electrons jumping from a lower level to one of two closely spaced upper levels. 2. A lens consisting of two components, usually making an achromatic lens. These usually have one component of crown glass and one of flint glass. Chemistry A pair of associated lines in certain spectra, e.g. the two lines that make up the sodium D-lines. Electronics and Electrical Engineering See dipole.
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