Template:On This Day (nonfiction)/April 24

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  • 1656: Mathematician and physicist Thomas Fincke dies. He introduced the modern names of the trigonometric functions tangent and secant.

    1656: Mathematician and physicist Thomas Fincke dies. He introduced the modern names of the trigonometric functions tangent and secant.

  • 1914: The Franck–Hertz experiment, a pillar of quantum mechanics, is presented to the German Physical Society.

    1914: The Franck–Hertz experiment, a pillar of quantum mechanics, is presented to the German Physical Society.

  • 1967: Cosmonaut Vladimir Komarov dies in Soyuz 1 when its parachute fails to open. He is the first human to die during a space mission.

    1967: Cosmonaut Vladimir Komarov dies in Soyuz 1 when its parachute fails to open. He is the first human to die during a space mission.

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