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Fraunhofer

[froun-hoh-fer, frou-uh n-hof-er; German froun-hoh-fuh r]
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noun
  1. 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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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for fraunhofer

Historical Examples

  • Consequently they are known as Fraunhofer lines, or dark absorption lines.

    Astronomy

    David Todd

  • 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.

  • 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.

British Dictionary definitions for fraunhofer

Fraunhofer

noun
  1. 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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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