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Joseph von Fraunhofer

Joseph von Fraunhofer

1787 CE–1826 CE · Straubing

Joseph Ritter von Fraunhofer was a German physicist and optical lens manufacturer. He made optical glass, an achromatic telescope, and objective lenses. He developed diffraction gratings 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.

Adapted from Wikipedia, licensed under CC BY-SA 4.0.

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