Template:Selected anniversaries/April 15: Difference between revisions

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File:Leonardo by Meizi.jpg|link=Leonardo da Vinci (nonfiction)|1452: Polymath [[Leonardo da Vinci (nonfiction)|Leonardo da Vinci]] born. His areas of interest will include painting, sculpting, architecture, invention, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography.
File:Leonardo by Meizi.jpg|link=Leonardo da Vinci (nonfiction)|1452: Polymath [[Leonardo da Vinci (nonfiction)|Leonardo da Vinci]] born. His areas of interest will include painting, sculpting, architecture, invention, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography.


File:Pedro Mejía.jpg|link=Pedro Mexía (nonfiction)|1548: Writer, humanist, and historian [[Pedro Mexía (nonfiction)|Pedro Mexía]] appointed consulting crime-fighter to the court of Emperor Charles V. Mexia will discover and expose [[Crimes against mathematical constants|math crime conspiracy]] among the Emperor's ministers.
File:Leonardo_da_Vinci_in_flight.jpg|link=Leonardo da Vinci|1488: Polymath [[Leonardo da Vinci]] publishes groundbreaking treatise on applications of the [[Gnomon algorithm]] principle to powered flight.
 
||1552 – Pietro Cataldi, Italian mathematician and astronomer (d. 1626)


||1641 – Robert Sibbald, Scottish physician and geographer (d. 1722)
File:Due_lettioni_date_nella_academia_erigenda_dove_si_mostra_come_si_trovi_la_grandezza_delle_superficie_rettilinee.jpg|link=Pietro Cataldi (nonfiction)|1552: Mathematician and astronomer [[Pietro Cataldi (nonfiction)|Pietro Cataldi]] born. Cataldi will contribute to the development of continued fractions and a method for their representation; he will also discover the sixth and seventh perfect numbers by 1588.


File:Leonhard Euler.jpg|link=Leonhard Euler (nonfiction)|1707: Mathematician and physicist [[Leonhard Euler (nonfiction)|Leonhard Euler]] born. He will make important and influential discoveries in many branches of mathematics, and will introduce much of the modern mathematical terminology and notation, such as the notion of a mathematical function.
File:Leonhard Euler.jpg|link=Leonhard Euler (nonfiction)|1707: Mathematician and physicist [[Leonhard Euler (nonfiction)|Leonhard Euler]] born. He will make important and influential discoveries in many branches of mathematics, and will introduce much of the modern mathematical terminology and notation, such as the notion of a mathematical function.
||1710 – William Cullen, Scottish physician and chemist (d. 1790)
||Felice Fontana (b. 15 April 1730) was an Italian physicist who discovered the water gas shift reaction in 1780. He is also credited with launching modern toxicology and investigating the human eye.
||1754 – Jacopo Riccati, Italian mathematician and academic (b. 1676)
||1755 – Samuel Johnson's ''A Dictionary of the English Language'' is published in London.


File:Peder Horrebow.jpg|link=Peder Horrebow (nonfiction)|1764: Astronomer and mathematician [[Peder Horrebow (nonfiction)|Peder Horrebow]] dies. he invent a way to determine a place's latitude from the stars.
File:Peder Horrebow.jpg|link=Peder Horrebow (nonfiction)|1764: Astronomer and mathematician [[Peder Horrebow (nonfiction)|Peder Horrebow]] dies. he invent a way to determine a place's latitude from the stars.


||1765 – Mikhail Lomonosov, Russian chemist and physicist (b. 1711)
File:Ernst_Ruhmer,_Technical_World_cover_(1905).jpg|link=Ernst Ruhmer (nonfiction)|1878: Physicist [[Ernst Ruhmer (nonfiction)|Ernst Ruhmer]] born. Ruhmer will invent applications for the light-sensitivity properties of selenium, including wireless telephony using line-of-sight optical transmissions, sound-on-film audio recording, and television transmissions over wires.
 
||1793 – Ignacije Szentmartony, Croatian priest, mathematician, and astronomer (b. 1718)
 
||Friedrich Georg Wilhelm von Struve (b. 15 April 1793) was a German-Russian astronomer and geodesist from the famous Struve family. He is best known for studying double stars and for initiating a triangulation survey later named Struve Geodetic Arc in his honor.
 
File:A la mémoire de J.M. Jacquard.jpg|link=Joseph Marie Jacquard (nonfiction)|1805: Emperor grants the patent for Jacquard’s loom to the city of Lyon. In return, Jacquard received a lifelong pension of 3,000 francs.
 
File:Johann Philipp Reis.jpg|link=|1854: Scientist and inventor [[Johann Philipp Reis (nonfiction)|Johann Philipp Reis]] uses [[scrying engine]] technology to fight [[crimes against mathematical constants]].
 
||1854 – Arthur Aikin, English chemist and mineralogist (b. 1773)
 
||1874 – Johannes Stark, German physicist and academic, Nobel Prize laureate (d. 1957)
 
||1892 – Corrie ten Boom, Dutch-American clocksmith Nazi resister, and author (d. 1983)
 
||1896 – Nikolay Semyonov, Russian physicist and chemist, Nobel Prize laureate (d. 1986)
 
||1910 – Miguel Najdorf, Polish-Argentinian chess player and theoretician (d. 1997)
 
File:Johannes Bosscha.jpg|link=Johannes Bosscha (nonfiction)|1911: Physicist [[Johannes Bosscha (nonfiction)|Johannes Bosscha Jr.]] dies. He made important investigations on galvanic polarization and the rapidity of sound waves; he was one of the first (1855) to suggest the possibility of sending two messages simultaneously over the same wire.
 
||1920 – Godfrey Stafford, English-South African physicist and academic (d. 2013)
 
||1922 – U.S. Senator John B. Kendrick of Wyoming introduces a resolution calling for an investigation of a secret land deal, which leads to the discovery of the Teapot Dome scandal.
 
||1923 – Robert DePugh, American activist, founded the Minutemen (an anti-Communist organization) (d. 2009)
 
File:Charles Lindbergh.jpg|link=File:Charles Lindbergh.jpg|1926: Aviator [[Charles Lindbergh (nonfiction)|Charles Lindbergh]] opens service on the newly designated 278-mile (447 km) Contract Air Mail Route #2 (CAM-2) to provide service between St. Louis and Chicago (Maywood Field) with two intermediate stops in Springfield and Peoria, Illinois.
 
||1927 – Robert Mills, American physicist and academic (d. 1999)
 
File:Albert Einstein and Alice Beta Conducting Research.jpg|link=Albert Einstein and Alice Beta Conducting Research|1936: ''[[Albert Einstein and Alice Beta Conducting Research]]'' wins Pulitzer award for "most prescient illustration of the decade".
 
||Hans Maass (d. April 15, 1992) was a German mathematician who introduced Maass wave forms (Maass 1949) and Koecher–Maass series (Maass 1950) and Maass–Selberg relations and who proved most of the Saito–Kurokawa conjecture.
 
||1993 – John Tuzo Wilson, Canadian geophysicist and geologist (b. 1908)
 
||2009 – László Tisza, Hungarian-American physicist and academic (b. 1907)
 
||2013 – Benjamin Fain, Ukrainian-Israeli physicist and academic (b. 1930)


||2014 – John Houbolt, American engineer and academic (b. 1919) lunar
File:Johannes Bosscha.jpg|link=Johannes Bosscha (nonfiction)|1911: Physicist [[Johannes Bosscha (nonfiction)|Johannes Bosscha Jr.]] dies. Bosscha made important investigations on galvanic polarization and the rapidity of sound waves; he was one of the first (1855) to suggest the possibility of sending two messages simultaneously over the same wire.


File:Cantor Parabola.jpg|link=Cantor Parabola|2017: Math photographer [[Cantor Parabola]] attends Minicon 52, taking a series of photographs with temporal superimpositions from Minicons 51 and 53.
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Latest revision as of 03:11, 15 April 2022

  • 1452: Polymath Leonardo da Vinci born. His areas of interest will include painting, sculpting, architecture, invention, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography.

    1452: Polymath Leonardo da Vinci born. His areas of interest will include painting, sculpting, architecture, invention, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography.

  • 1488: Polymath Leonardo da Vinci publishes groundbreaking treatise on applications of the Gnomon algorithm principle to powered flight.

    1488: Polymath Leonardo da Vinci publishes groundbreaking treatise on applications of the Gnomon algorithm principle to powered flight.

  • 1552: Mathematician and astronomer Pietro Cataldi born. Cataldi will contribute to the development of continued fractions and a method for their representation; he will also discover the sixth and seventh perfect numbers by 1588.

    1552: Mathematician and astronomer Pietro Cataldi born. Cataldi will contribute to the development of continued fractions and a method for their representation; he will also discover the sixth and seventh perfect numbers by 1588.

  • 1707: Mathematician and physicist Leonhard Euler born. He will make important and influential discoveries in many branches of mathematics, and will introduce much of the modern mathematical terminology and notation, such as the notion of a mathematical function.

    1707: Mathematician and physicist Leonhard Euler born. He will make important and influential discoveries in many branches of mathematics, and will introduce much of the modern mathematical terminology and notation, such as the notion of a mathematical function.

  • 1764: Astronomer and mathematician Peder Horrebow dies. he invent a way to determine a place's latitude from the stars.

    1764: Astronomer and mathematician Peder Horrebow dies. he invent a way to determine a place's latitude from the stars.

  • 1878: Physicist Ernst Ruhmer born. Ruhmer will invent applications for the light-sensitivity properties of selenium, including wireless telephony using line-of-sight optical transmissions, sound-on-film audio recording, and television transmissions over wires.

    1878: Physicist Ernst Ruhmer born. Ruhmer will invent applications for the light-sensitivity properties of selenium, including wireless telephony using line-of-sight optical transmissions, sound-on-film audio recording, and television transmissions over wires.

  • 1911: Physicist Johannes Bosscha Jr. dies. Bosscha made important investigations on galvanic polarization and the rapidity of sound waves; he was one of the first (1855) to suggest the possibility of sending two messages simultaneously over the same wire.

    1911: Physicist Johannes Bosscha Jr. dies. Bosscha made important investigations on galvanic polarization and the rapidity of sound waves; he was one of the first (1855) to suggest the possibility of sending two messages simultaneously over the same wire.

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