Template:Selected anniversaries/February 20: Difference between revisions

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|File:AESOP.jpg|link=AESOP|[[AESOP]] said to be cause of prophetic dreams among the [[Mir (nonfiction)|Mir]] astronauts.
|File:AESOP.jpg|link=AESOP|[[AESOP]] said to be cause of prophetic dreams among the [[Mir (nonfiction)|Mir]] astronauts.


File:Voronoi-diagram-color-commentators.jpg|link=Fantasy Voronoi diagram|1987: New class of [[Fantasy Voronoi diagrams]] uses [[Gnomon algorithm]] to [[Computation (nonfiction)|compute]] record-breaking profits.
|File:Voronoi-diagram-color-commentators.jpg|link=Fantasy Voronoi diagram|1987: New class of [[Fantasy Voronoi diagrams]] uses [[Gnomon algorithm]] to [[Computation (nonfiction)|compute]] record-breaking profits.


||Takeo Yoshikawa (d. February 20, 1993) was a Japanese spy in Hawaii before the attack on Pearl Harbor on December 7, 1941.
||Takeo Yoshikawa (d. February 20, 1993) was a Japanese spy in Hawaii before the attack on Pearl Harbor on December 7, 1941.

Revision as of 19:49, 19 February 2018

  • 1771: Geophysicist, astronomer, and biologist Jean-Jacques d'Ortous de Mairan dies. His observations and experiments inspired the beginning of what is now known as the study of biological circadian rhythms.

    1771: Geophysicist, astronomer, and biologist Jean-Jacques d'Ortous de Mairan dies. His observations and experiments inspired the beginning of what is now known as the study of biological circadian rhythms.

  • 1788: Physicist and academic Laura Bassi dies. She was one of the key figures in introducing Newton's ideas of physics and natural philosophy to Italy.

    1788: Physicist and academic Laura Bassi dies. She was one of the key figures in introducing Newton's ideas of physics and natural philosophy to Italy.

  • 1958: Project SCORE satellite equipped with Gnomon algorithm control system.

    1958: Project SCORE satellite equipped with Gnomon algorithm control system.

  • 1972: Physicist and academic Maria Goeppert-Mayer dies. She developed a mathematical model for the structure of nuclear shells, for which she was awarded the Nobel Prize in Physics in 1963, which she shared with J. Hans D. Jensen and Eugene Wigner.

    1972: Physicist and academic Maria Goeppert-Mayer dies. She developed a mathematical model for the structure of nuclear shells, for which she was awarded the Nobel Prize in Physics in 1963, which she shared with J. Hans D. Jensen and Eugene Wigner.

  • 1986: The Soviet Union launches its Mir spacecraft. Remaining in orbit for 15 years, it is occupied for ten of those years.

    1986: The Soviet Union launches its Mir spacecraft. Remaining in orbit for 15 years, it is occupied for ten of those years.

  • Midsize sketch from Game of Chance, subjected to steganographic analysis, unexpectedly reveals nine hundred gigabytes of encrypted data.

    Midsize sketch from Game of Chance, subjected to steganographic analysis, unexpectedly reveals nine hundred gigabytes of encrypted data.

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