Fraunhofer lines

Origin of Fraunhofer lines

First recorded in 1830–40; named after J. von Fraunhofer
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British Dictionary definitions for fraunhofer lines

Fraunhofer lines

pl n
  1. a set of dark lines appearing in the continuous emission spectrum of the sun. It is caused by the absorption of light of certain wavelengths coming from the hotter region of the sun by elements in the cooler outer atmosphere

Word Origin for Fraunhofer lines

named after J. von Fraunhofer (1787–1826), German physicist
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