Joseph von Fraunhofer
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Joseph von Fraunhofer (March 6, 1787 – June 7, 1826) was a German optician. He is known for the discovery of the dark absorption lines known as Fraunhofer lines in the Sun's spectrum, and for making excellent optical glass and achromatic telescope objectives.
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- The number of different optical phenomena has become in our time so great that caution must be taken so as to avoid being deceived, and also to refer the phenomena to the simple laws.
- I. Bernard Cohen, Henry Crew, Joseph von Fraunhofer, De Witt Bristol Brace (1981). The Wave theory, light and spectra. Prismatic and diffraction spectra. Memoirs by Joseph Von Fraunhofer. Ayer Publishing. p. 14. ISBN 0-405-13867-9.
- It will reward enough for me if, by the publication of the present experiment, I have directed the attention of investigators to this subject, which still promises much for physicial optics and appears to open a new field.
- I. Bernard Cohen, Henry Crew, Joseph von Fraunhofer, De Witt Bristol Brace (1981). The Wave theory, light and spectra. Prismatic and diffraction spectra. Memoirs by Joseph Von Fraunhofer. Ayer Publishing. p. 38. ISBN 0-405-13867-9.
