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fraunhofer |
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Fraunhofer Joseph von . 1787--1826, German physicist and optician, who investigated spectra of the sun, planets, and fixed stars, and improved telescopes and other optical instruments fraunhofer [′frau̇n‚hōf·ər] (spectroscopy) A unit for measurement of the reduced width of a spectrum line such that a spectrum line's reduced width in fraunhofers equals 106times its equivalent width divided by its wavelength. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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