Joseph Von Fraunhofer
Joseph Fraunhofer, ennobled in 1824 as Ritter von Fraunhofer (6 March 1787 – 7 June 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.
Read more about Joseph Von Fraunhofer: Biography, Invention and Scientific Research, Telescopes and Optical Instruments
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