Template:Selected anniversaries/August 23

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  • 1638: René Descartes, in a letter to Marin Mersenne, proposed his folium (x-cubed + y-cubed = 2axy) as a test case to challenge Pierre de Fermat's differentiation techniques. To Descartes' embarrassment, Fermat's method worked.

    1638: René Descartes, in a letter to Marin Mersenne, proposed his folium (x-cubed + y-cubed = 2axy) as a test case to challenge Pierre de Fermat's differentiation techniques. To Descartes' embarrassment, Fermat's method worked.

  • 1829: Mathematician and historian Moritz Cantor born. He will write Vorlesungen über Geschichte der Mathematik, which traces the history of mathematics up to 1799.

    1829: Mathematician and historian Moritz Cantor born. He will write Vorlesungen über Geschichte der Mathematik, which traces the history of mathematics up to 1799.

  • 1966: Lunar Orbiter 1 takes the first photograph of Earth from orbit around the Moon.

    1966: Lunar Orbiter 1 takes the first photograph of Earth from orbit around the Moon.

  • 1999: Biochemist and crystallographer John Kendrew dies. He shared the 1962 Nobel Prize for chemistry with Max Perutz for determining the atomic structures of proteins using X-ray crystallography.

    1999: Biochemist and crystallographer John Kendrew dies. He shared the 1962 Nobel Prize for chemistry with Max Perutz for determining the atomic structures of proteins using X-ray crystallography.

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