Template:Selected anniversaries/November 21

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  • 1652: Mathematician, physician, and astronomer Jan Brożek dies. He contributed to a greater knowledge of Nicolaus Copernicus' theories and was his ardent supporter and early prospective biographer.

    1652: Mathematician, physician, and astronomer Jan Brożek dies. He contributed to a greater knowledge of Nicolaus Copernicus' theories and was his ardent supporter and early prospective biographer.

  • 1676: Astronomer Ole Rømer presents the first quantitative measurements of the speed of light.

    1676: Astronomer Ole Rømer presents the first quantitative measurements of the speed of light.

  • 1905: Albert Einstein's paper that leads to the mass–energy equivalence formula, E = mc², is published in the journal Annalen der Physik.

    1905: Albert Einstein's paper that leads to the mass–energy equivalence formula, E = mc², is published in the journal Annalen der Physik.

  • 1996: Theoretical physicist Mohammad Abdus Salam dies. He shared the 1979 Nobel Prize in Physics with Sheldon Glashow and Steven Weinberg for his contribution to the electroweak unification theory.

    1996: Theoretical physicist Mohammad Abdus Salam dies. He shared the 1979 Nobel Prize in Physics with Sheldon Glashow and Steven Weinberg for his contribution to the electroweak unification theory.

  • 2018: Spiral voted Picture of the Day by the citizens of New Minneapolis, Canada.

    2018: Spiral voted Picture of the Day by the citizens of New Minneapolis, Canada.

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