[froun-hoh-fer, frou-uh n-hof-er; German froun-hoh-fuh r]
- Jo·seph von [joh-zuh f von, -suh f; German yoh-zef fuh n] /ˈdʒoʊ zəf vɒn, -səf; German ˈyoʊ zɛf fən/, 1787–1826, German optician and physicist.
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Examples from the Web for fraunhofer
Consequently they are known as Fraunhofer lines, or dark absorption lines.
He also invented a heliometer, afterwards perfected by Fraunhofer.
Meantime Fraunhofer made the discovery that the spectrum of an ignited gaseous body is non-continuous, and has interrupting lines.New Witnesses for God (Volume 2 of 3)
B. H. Roberts
This accounts for the weakened solar spectrum with Fraunhofer absorption lines, and this part of the light is polarized.
Efforts at improving optical glass had, however, not been confined to the descendants and successors of Guinand and Fraunhofer.
- Joseph von (ˈjoːzɛf fɔn). 1787–1826, German physicist and optician, who investigated spectra of the sun, planets, and fixed stars, and improved telescopes and other optical instruments
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