"Fraunhofer made a great many experiments connected with these mysterious lines, anxious to discover, if possible, their meaning, For although he now saw the lines, which had scarcely so much as been seen before, he could not understand them; he could not read what they said. They spoke to him, indeed, about the Sun, but they spoke in a foreign language, the key to which he did not possess."
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Agnes Giberne, Radiant suns
https://en.wikiquote.org/wiki/Joseph_von_Fraunhofer
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Joseph von Fraunhofer
Joseph Ritter von Fraunhofer (6 March 1787 – 7 June 1826) was a Bavarian physicist and optical lens manufacturer. He made optical glass and achromatic telescope objective lenses, invented the spectroscope, and developed diffraction grating. He also discovered and studied the dark absorption lines in the spectrum of the sun now known as Fraunhofer lines.
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