etalon
/eyt-l-on/US // ˈeɪt lˌɒn //UK // (ˈɛtəˌlɒn) //
标准具
Definitions
n.名词 noun
- 1
Optics.
- : an interferometer consisting of two glass plates that reflect approximately half of each ray of light incident upon them and that are separated by a small, fixed distance: used to compare wavelengths and to study atomic spectra.
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