Joseph von Fraunhofer
Joseph Ritter von Fraunhofer (/ˈfraʊnˌhoʊfər/; German: [ˈfraʊnˌhoːfɐ]; 6 March 1787 – 7 June 1826) was a German physicist and optical lens manufacturer. He made optical glass, an achromatic telescope, and objective lenses. He developed diffraction grating and also invented the spectroscope. In 1814, he discovered and studied the dark absorption lines in the spectrum of the sun now known as Fraunhofer lines.
Joseph von Fraunhofer | |
|---|---|
| Born | 6 March 1787 Straubing, Electorate of Bavaria, Holy Roman Empire |
| Died | 7 June 1826 (aged 39) Munich, Kingdom of Bavaria, German Confederation |
| Known for | Fraunhofer diffraction Fraunhofer lines Fraunhofer distance |
The German research organization Fraunhofer Society, which is Europe's biggest Society for the advancement of applied research, is named after him.
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