"Up to the present time, in experiments on diffraction there has been no instrument, except a magnifying-glass, which could be used with profit; and this may perhaps be one of the reasons why in this field of physical optics we are so backward, and why we know so little of the laws of this modification of light."
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Prismatic and Diffraction Spectra: Memoirs (1899) Tr. & Ed. J. S. Ames p. 13
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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