Useful english dictionary. 2012.
Fraunhofer lines — Fraun·ho·fer lines frau̇n .hōf ər n pl the dark lines in the spectrum of sunlight Fraunhofer Joseph von (1787 1826) German optician and physicist. Fraunhofer was a master theoretical optician as well as an expert maker of glass lenses and… … Medical dictionary
Fraunhofer lines — Fraun ho*fer lines prop. n. pl.. (Physics.) 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, a German physicist. [1913 Webster] … The Collaborative International Dictionary of English
Fraunhoferlines — Fraun·ho·fer lines (frounʹhō fər) pl.n. A set of several hundred dark lines appearing against the bright background of the continuous solar spectrum and produced by absorption of light by the cooler gases in the sun s outer atmosphere at… … Universalium
