Template:Selected anniversaries/February 21: Difference between revisions

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||921 – Abe no Seimei, Japanese astrologer (d. 1005)
||1556 – Sethus Calvisius, German astronomer, composer, and theorist (d. 1615)
File:Gérard Desargues.jpg|link=Girard Desargues (nonfiction)|1591: Mathematician and engineer [[Girard Desargues (nonfiction)|Girard Desargues]] born. He will be one of the founders of projective geometry.
File:Gérard Desargues.jpg|link=Girard Desargues (nonfiction)|1591: Mathematician and engineer [[Girard Desargues (nonfiction)|Girard Desargues]] born. He will be one of the founders of projective geometry.


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File:Sir Francis Ronalds.jpg|link=Francis Ronalds (nonfiction)|1788: Scientist, inventor, and engineer [[Francis Ronalds (nonfiction)|Francis Ronalds]] born. He will be knighted for creating the first working electric telegraph.
File:Sir Francis Ronalds.jpg|link=Francis Ronalds (nonfiction)|1788: Scientist, inventor, and engineer [[Francis Ronalds (nonfiction)|Francis Ronalds]] born. He will be knighted for creating the first working electric telegraph.


||1804 – The first self-propelling steam locomotive makes its outing at the Pen-y-Darren Ironworks in Wales.
File:Charles Piazzi Smyth.jpg|link=Charles Piazzi Smyth (nonfiction)|1900: Astronomer [[Charles Piazzi Smyth (nonfiction)|Charles Piazzi Smyth]] dies. Smyth made innovations in astronomy, and made pyramidological and metrological studies of the Great Pyramid of Giza.
 
||1828 – Initial issue of the Cherokee Phoenix is the first periodical to use the Cherokee syllabary invented by Sequoyah.
 
||Pietro Paoli (d. February 21, 1839) was an Italian mathematician.
 
||1842 – John Greenough is granted the first U.S. patent for the sewing machine.
 
||Justinus Andreas Christian Kerner (d. 21 February 1862) was a German poet, practicing physician, and medical writer.
 
||1878 – The first telephone directory is issued in New Haven, Connecticut.
 
||1894 – Shanti Swaroop Bhatnagar, Indian chemist and academic (d. 1955)
 
||1895 – Henrik Dam, Danish biochemist and physiologist, Nobel Prize laureate (d. 1976)
 
File:Curie_and_radium_by_Castaigne.jpg|link=Radium (nonfiction)|1899: Marie and Pierre Curie use [[Radium (nonfiction)|radium]] to detect and expose [[crimes against physical constants]].
 
||György Hajós (b. February 21, 1912) was a Hungarian mathematician who worked in group theory, graph theory, and geometry.
 
||1921 – Richard T. Whitcomb, American aeronautical engineer (d. 2009)
 
||1924 – Thelma Estrin, American computer scientist and engineer (d. 2014)
 
||1924 – Dorothy Blum, American computer scientist and cryptanalyst (d. 1980)


File:Heike Kamerlingh Onnes.jpg|link=Heike Kamerlingh Onnes (nonfiction)|1926: Physicist and academic [[Heike Kamerlingh Onnes (nonfiction)|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".
File:Heike Kamerlingh Onnes.jpg|link=Heike Kamerlingh Onnes (nonfiction)|1926: Physicist and academic [[Heike Kamerlingh Onnes (nonfiction)|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".


File:Alice Beta.jpg|link=Alice Beta|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]]."
File:George Ellery Hale.jpg|link=George Ellery Hale (nonfiction)|1938: Astronomer and journalist [[George Ellery Hale (nonfiction)|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.
||1941 – Frederick Banting, Canadian physician and academic, Nobel Prize laureate (b. 1891)
||1947 – In New York City, Edwin Land demonstrates the first "instant camera", the Polaroid Land Camera, to a meeting of the Optical Society of America.
||Julio Rey Pastor (14 August 1888 – 21 February 1962) was a Spanish mathematician and historian of science.
||1965 – Malcolm X is assassinated at the Audubon Ballroom in New York City.
||1968 – Howard Florey, Australian pathologist and pharmacologist, Nobel Prize laureate (b. 1898)
||1972 – The Soviet unmanned spaceship Luna 20 lands on the Moon.
File:Egon Rhodomunde.jpg|link=Egon Rhodomunde|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 (nonfiction)|Watergate scandal]].
File:Nixon April-29-1974.jpg|link=Watergate scandal (nonfiction)|1975: [[Watergate scandal (nonfiction)|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.
||Isaac Jacob Schoenberg (d. February 21, 1990) was a Romanian-American mathematician, known for his discovery of splines. Pic.
||1999 – Gertrude B. Elion, American biochemist and pharmacologist, Nobel Prize laureate (b. 1918)
||Major General Kenneth David "Nick" Nichols (d. 21 February 2000) was a United States Army officer and an engineer. He worked on the Manhattan Project, which developed the Atomic Bomb during World War II, as Deputy District Engineer to James C. Marshall, and from 13 August 1943 as the District Engineer of the Manhattan Engineer District. He was responsible for both the uranium production facility at the Clinton Engineer Works at Oak Ridge, Tennessee and the plutonium production facility at Hanford Engineer Works in Washington state.
File:Exploded electrolytic capacitor.jpg|link=Capacitor plague (nonfiction)|2002: [[Capacitor plague (nonfiction)|Capacitor plague]] affects several brands of [[portable envy]] devices.
|File:Portable envy clock generator.jpg|link=Portable envy|[[Portable envy]] components at risk of [[Capacitor plague (nonfiction)|capacitor plague]].
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Latest revision as of 10:20, 21 February 2022

  • 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.

  • 1900: Astronomer Charles Piazzi Smyth dies. Smyth made innovations in astronomy, and made pyramidological and metrological studies of the Great Pyramid of Giza.

    1900: Astronomer Charles Piazzi Smyth dies. Smyth made innovations in astronomy, and made pyramidological and metrological studies of the Great Pyramid of Giza.

  • 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".

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