Template:Selected anniversaries/April 21: Difference between revisions

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File:Pierre Alexandre Laurent Forfait.jpg|link=Pierre-Alexandre-Laurent Forfait (nonfiction)|1752: Engineer, hydrographer, and politician [[Pierre-Alexandre-Laurent Forfait (nonfiction)|Pierre-Alexandre-Laurent Forfait]] born. He designed and oversaw the building of ships, developing new techniques to improve the disposition of cargo in ships' holds and making other structural improvements.
File:Pierre Alexandre Laurent Forfait.jpg|link=Pierre-Alexandre-Laurent Forfait (nonfiction)|1752: Engineer, hydrographer, and politician [[Pierre-Alexandre-Laurent Forfait (nonfiction)|Pierre-Alexandre-Laurent Forfait]] born. He designed and oversaw the building of ships, developing new techniques to improve the disposition of cargo in ships' holds and making other structural improvements.


File:The Eel Fighting Neptune Slaughter.jpg|link=The Eel Fighting Neptune Slaughter|1752: Art critic, adventurer, and alleged time-traveller [[The Eel]] (left) stops aquatic cryptid and alleged supervillain [[Neptune Slaughter]] (right) from kidnapping the newborn [[Pierre-Alexandre-Laurent Forfait (nonfiction)|Pierre-Alexandre-Laurent Forfait]].
File:The Eel Fighting Neptune Slaughter.jpg|link=The Eel Fighting Neptune Slaughter|1752: Art critic, adventurer, and alleged time-traveller [[The Eel]] stops aquatic cryptid and alleged supervillain [[Neptune Slaughter]] from kidnapping the newborn [[Pierre-Alexandre-Laurent Forfait (nonfiction)|Pierre-Alexandre-Laurent Forfait]].


File:Jean Baptiste Biot.jpg|link=Jean-Baptiste Biot (nonfiction)|1774: Physicist, astronomer, and mathematician [[Jean-Baptiste Biot (nonfiction)|Jean-Baptiste Biot]] born. He will establish the reality of meteorites, make an early balloon flight, and study the polarization of light.
File:Jean Baptiste Biot.jpg|link=Jean-Baptiste Biot (nonfiction)|1774: Physicist, astronomer, and mathematician [[Jean-Baptiste Biot (nonfiction)|Jean-Baptiste Biot]] born. He will establish the reality of meteorites, make an early balloon flight, and study the polarization of light.

Revision as of 17:36, 20 April 2018

  • 1552: Mathematician and astronomer Petrus Apianus dies. His works on cosmography, Astronomicum Caesareum (1540) and Cosmographicus liber (1524), were extremely influential in his time.

    1552: Mathematician and astronomer Petrus Apianus dies. His works on cosmography, Astronomicum Caesareum (1540) and Cosmographicus liber (1524), were extremely influential in his time.

  • 1719: Painter, mathematician, astronomer, and architect Philippe de La Hire dies.

    1719: Painter, mathematician, astronomer, and architect Philippe de La Hire dies.

  • 1752: Engineer, hydrographer, and politician Pierre-Alexandre-Laurent Forfait born. He designed and oversaw the building of ships, developing new techniques to improve the disposition of cargo in ships' holds and making other structural improvements.

    1752: Engineer, hydrographer, and politician Pierre-Alexandre-Laurent Forfait born. He designed and oversaw the building of ships, developing new techniques to improve the disposition of cargo in ships' holds and making other structural improvements.

  • 1752: Art critic, adventurer, and alleged time-traveller The Eel stops aquatic cryptid and alleged supervillain Neptune Slaughter from kidnapping the newborn Pierre-Alexandre-Laurent Forfait.

    1752: Art critic, adventurer, and alleged time-traveller The Eel stops aquatic cryptid and alleged supervillain Neptune Slaughter from kidnapping the newborn Pierre-Alexandre-Laurent Forfait.

  • 1774: Physicist, astronomer, and mathematician Jean-Baptiste Biot born. He will establish the reality of meteorites, make an early balloon flight, and study the polarization of light.

    1774: Physicist, astronomer, and mathematician Jean-Baptiste Biot born. He will establish the reality of meteorites, make an early balloon flight, and study the polarization of light.

  • 1793: American captain and mathematician Nathaniel Bowditch publishes his landmark study of cryptid and alleged supervillain Neptune Slaughter.

    1793: American captain and mathematician Nathaniel Bowditch publishes his landmark study of cryptid and alleged supervillain Neptune Slaughter.

  • 1822: Priest and inventor Hannibal Goodwin born. He will invent and patent rolled celluloid photographic film.

    1822: Priest and inventor Hannibal Goodwin born. He will invent and patent rolled celluloid photographic film.

  • 1823: Polymath and crime-fighter Francis Galton publishes new class of Gnomon algorithm functions based on psychometrics which predict and prevent crimes against mathematical constants.

    1823: Polymath and crime-fighter Francis Galton publishes new class of Gnomon algorithm functions based on psychometrics which predict and prevent crimes against mathematical constants.

  • 1825: Mathematician Johann Friedrich Pfaff dies. He worked on partial differential equations of the first order Pfaffian systems, as they are now called, which became part of the theory of differential forms.

    1825: Mathematician Johann Friedrich Pfaff dies. He worked on partial differential equations of the first order Pfaffian systems, as they are now called, which became part of the theory of differential forms.

  • 1882: Physicist and academic Percy Williams Bridgman born. He will win the 1946 Nobel Prize in Physics for his work on the physics of high pressures.

    1882: Physicist and academic Percy Williams Bridgman born. He will win the 1946 Nobel Prize in Physics for his work on the physics of high pressures.

  • 1883: Twain reminisces about Mark Twain Interviews Wallace War-Heels, calls it "the interview of a lifetime, and a singular bauble in the treasure-chest of my heart."

    1883: Twain reminisces about Mark Twain Interviews Wallace War-Heels, calls it "the interview of a lifetime, and a singular bauble in the treasure-chest of my heart."

  • 1910: Writer, entrepreneur, publisher and lecturer Mark Twain dies.

    1910: Writer, entrepreneur, publisher and lecturer Mark Twain dies.

  • Dragons Fighting]] unexpectedly reveals "at least a megabyte of data related to previously unknown Gnomon algorithm functions."

    Dragons Fighting]] unexpectedly reveals "at least a megabyte of data related to previously unknown Gnomon algorithm functions."

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