Fraunhofer lines — Fraun ho*fer lines prop. n. pl.. (Physics.) The lines of the spectrum; especially and properly, the dark lines of the solar spectrum, so called because first accurately observed and interpreted by Fraunhofer, a German physicist. [1913 Webster] … The Collaborative International Dictionary of English
Fraunhofer lines — [froun′hō΄fər] n. [after Joseph von Fraunhofer (1787 1826), Bavarian optician, who first mapped them accurately] the dark lines visible in the spectrum of the sun or a star … English World dictionary
Fraunhofer lines — In physics and optics, the Fraunhofer lines are a set of spectral lines named for the German physicist Joseph von Fraunhofer (1787–1826). The lines were originally observed as dark features (absorption lines) in the optical spectrum of the… … Wikipedia
Fraunhofer lines — Astron. the dark lines of the solar spectrum. [1830 40; named after J. von FRAUNHOFER] * * * In astronomical spectroscopy, dark lines in a star s spectrum caused by selective absorption of its radiation at specific wavelengths by the various… … Universalium
fraunhofer lines — n.pl. the dark lines visible in solar and stellar spectra. Etymology: J. von Fraunhofer, Bavarian physicist d. 1826 * * * ˈfrau̇nˌhōfə(r) noun Usage: usually capitalized F Etymology: after Joseph von Fraunhofer died 1826 Bavarian optician and… … Useful english dictionary
Fraunhofer lines — /ˈfraʊnhoʊfə laɪnz/ (say frownhohfuh luynz) plural noun the dark lines of the solar spectrum. {See Fraunhofer diffraction} …
Fraunhofer, Joseph von — • Optician (1787 1826) Catholic Encyclopedia. Kevin Knight. 2006. Fraunhofer, Joseph von Joseph von Fraunhofer … Catholic encyclopedia
Fraunhofer , Josef von — (1787–1826) German physicist and optician Fraunhofer, whose family was in the optical trade, was born in Straubing (now in Germany); he was apprenticed to an optician in Munich after his parents died. He subsequently moved to the Utzschneider… … Scientists
Fraunhofer, Joseph von — ▪ German physicist born March 6, 1787, Straubing, Bavaria [Germany] died June 7, 1826, Munich German physicist who first studied the dark lines of the Sun s spectrum, now known as Fraunhofer lines. He also was the first to use extensively the… … Universalium
Fraunhofer'sche Linien — Die Fraunhoferlinien sind dunkle Linien im Spektrum der Sonne. Solche Linien entstehen dadurch, dass Gase in der Photosphäre der sichtbaren Sonnenoberfläche einen Teil des Sonnenlichts absorbieren. Es handelt sich also um Absorptionslinien. Die… … Deutsch Wikipedia
