Biography:Joseph von Fraunhofer
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| Joseph von Fraunhofer | |
|---|---|
| |
| Fraunhofer | |
| Born | 6 March 1787 Straubing, Bavaria |
| Died | 7 June 1826 Munich, Bavaria
|
| Known for | Fraunhofer lines; diffraction grating; optical glass |
Joseph von Fraunhofer (1787-1826) was a German optician and physicist known for precision optical instruments and for the dark absorption lines in the solar spectrum now called Fraunhofer lines.
Spectral lines
Fraunhofer mapped hundreds of dark lines in the Sun's spectrum and labeled several of the strongest lines with letters. These observations were made before quantum mechanics, but they became part of the experimental background for spectroscopy and the later quantum explanation of atomic transitions.
Fraunhofer also developed high-quality optical glass, improved spectroscopes, and used diffraction gratings to measure wavelengths more accurately.
Quantum Collection links
- Physics:Quantum Spectral lines and series
- Physics:Quantum atoms/transition
- Physics:Quantum atoms/energy level
- Physics:Quantum photon
References
- "Joseph von Fraunhofer". https://www.britannica.com/biography/Joseph-von-Fraunhofer.
- "Joseph von Fraunhofer". https://mathshistory.st-andrews.ac.uk/Biographies/Fraunhofer/.
Author: Harold Foppele