German physicist and optical lens maker who built a precision spectroscope around 1814 to test the glass he manufactured, and used it to discover and catalogue hundreds of dark absorption lines crossing the sun's spectrum, now called Fraunhofer lines. His later comparison of stellar spectra to the sun's founded the practice of stellar spectroscopy.
Facts
FieldPhysics and optics, spectroscopy 1 Connections
Invented
Built a precision spectroscope around 1814 to test the optical glass he manufactured, discovering hundreds of dark absorption lines in the sun's spectrum now called Fraunhofer lines.
Source Spectroscope (Wikipedia)
Works In
Source Joseph von Fraunhofer (Wikipedia)
Sources
1. Joseph von Fraunhofer (Wikipedia)
WikipediaLead section
Joseph Ritter von Fraunhofer (; German: [ˈfraʊnˌhoːfɐ]; 6 March 1787-7 June 1826) was a German physicist and optical lens manufacturer.
- Works In: Physics
View the Source Spectroscope (Wikipedia)
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