Fraunhofer

[froun-hoh-fer, frou-uh n-hof-er; German froun-hoh-fuh r]

noun

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.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for fraunhofer

Historical Examples of fraunhofer

Consequently they are known as Fraunhofer lines, or dark absorption lines.
Astronomy
David Todd
He also invented a heliometer, afterwards perfected by Fraunhofer.
Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3
Various
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.
Astronomy
David Todd
Efforts at improving optical glass had, however, not been confined to the descendants and successors of Guinand and Fraunhofer.
Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1
Various

British Dictionary definitions for fraunhofer

Fraunhofer

noun

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012