Template:Selected anniversaries/February 21: Difference between revisions

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||1804: The first self-propelling steam locomotive makes its outing at the Pen-y-Darren Ironworks in Wales.
||1804: The first self-propelling steam locomotive makes its outing at the Pen-y-Darren Ironworks in Wales.
||1805: Forestry biologist and botanist Theodor Hartig born. Hartig discovered and named sieve tube element cells, and described what is now known as the Hartig net, a network of fungal hyphae that penetrate feeder roots and surround epidermal cells. Pic.


||1811: As Humphry Davy read a paper to the Royal Society, he introduced the name "chlorine" from the Greek word for "green," for the bright yellow green gas chemists then knew as oxymuriatic gas. Pic.
||1811: As Humphry Davy read a paper to the Royal Society, he introduced the name "chlorine" from the Greek word for "green," for the bright yellow green gas chemists then knew as oxymuriatic gas. Pic.

Revision as of 04:56, 12 December 2019

  • 1591: Mathematician and engineer Girard Desargues born. He will be one of the founders of projective geometry.

    1591: Mathematician and engineer Girard Desargues born. He will be one of the founders of projective geometry.

  • 1592: Canterbury scrying engine crashes, predicts faulty future; the resulting paradox will develop into an epidemic of capacitor failure by the early twenty-first century.

    1592: Canterbury scrying engine crashes, predicts faulty future; the resulting paradox will develop into an epidemic of capacitor failure by the early twenty-first century.

  • 1677: Philosopher, scholar, and lens-grinder Baruch Spinoza dies. He laid the groundwork for the 18th-century Enlightenment and modern biblical criticism, including modern conceptions of the self and the universe.

    1677: Philosopher, scholar, and lens-grinder Baruch Spinoza dies. He laid the groundwork for the 18th-century Enlightenment and modern biblical criticism, including modern conceptions of the self and the universe.

  • 1788: Scientist, inventor, and engineer Francis Ronalds born. He will be knighted for creating the first working electric telegraph.

    1788: Scientist, inventor, and engineer Francis Ronalds born. He will be knighted for creating the first working electric telegraph.

  • 1899: Marie and Pierre Curie use radium to detect and expose crimes against physical constants.

    1899: Marie and Pierre Curie use radium to detect and expose crimes against physical constants.

  • 1926: Physicist and academic Heike Kamerlingh Onnes dies. He received widespread recognition for his work, including the 1913 Nobel Prize in Physics for "his investigations on the properties of matter at low temperatures which led, inter alia, to the production of liquid helium".

    1926: Physicist and academic Heike Kamerlingh Onnes dies. He received widespread recognition for his work, including the 1913 Nobel Prize in Physics for "his investigations on the properties of matter at low temperatures which led, inter alia, to the production of liquid helium".

  • 1933: Alice Beta tells reporters that the rise of the Nazi party in Germany will lead to "new and unprecedently dangerous crimes against mathematical constants."

    1933: Alice Beta tells reporters that the rise of the Nazi party in Germany will lead to "new and unprecedently dangerous crimes against mathematical constants."

  • 1938: Astronomer and journalist George Ellery Hale dies. He discovered magnetic fields in sunspots, and was a leader or key figure in the planning or construction of several world-leading telescopes.

    1938: Astronomer and journalist George Ellery Hale dies. He discovered magnetic fields in sunspots, and was a leader or key figure in the planning or construction of several world-leading telescopes.

  • 1974: Film director and arms dealer Egon Rhodomunde privately advises White House aides H. R. Haldeman and John Ehrlichman that they "will both be sentenced to jail a year from today" for their roles in the Watergate scandal.

    1974: Film director and arms dealer Egon Rhodomunde privately advises White House aides H. R. Haldeman and John Ehrlichman that they "will both be sentenced to jail a year from today" for their roles in the Watergate scandal.

  • 1975: Watergate scandal: Former United States Attorney General John N. Mitchell and former White House aides H. R. Haldeman and John Ehrlichman are sentenced to prison.

    1975: Watergate scandal: Former United States Attorney General John N. Mitchell and former White House aides H. R. Haldeman and John Ehrlichman are sentenced to prison.

  • 2002: Capacitor plague affects several brands of portable envy devices.

    2002: Capacitor plague affects several brands of portable envy devices.

  • 2016: Signed first edition of Yellow Spiral stolen from the Uffizi gallery in Florence by agents of the Forbidden Ratio gang, perhaps under contract to Baron Zersetzung.

    2016: Signed first edition of Yellow Spiral stolen from the Uffizi gallery in Florence by agents of the Forbidden Ratio gang, perhaps under contract to Baron Zersetzung.

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