Kata bahasa Indonesia
English word
TANDA HUBUNG
CIDE DICTIONARY
OXFORD DICTIONARY
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CIDE DICTIONARY
fraunhofer lines, prop. n. pl.
The lines of the spectrum; especially and properly, the dark lines of the solar spectrum, so called because first accurately observed and interpreted by Fraunhofer
OXFORD DICTIONARY
fraunhofer lines, n.pl. the dark lines visible in solar and stellar spectra.
Etymology
J. von Fraunhofer, Bavarian physicist d. 1826