Template:Selected anniversaries/April 1: Difference between revisions

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||1578: William Harvey born ... physician and academic.
||George Mohr - Jørgen Mohr (Latinised Georg(ius) Mohr; born 1 April 1640) was a Danish mathematician, known for being the first to prove the Mohr–Mascheroni theorem, which states that any geometric construction which can be done with compass and straightedge can also be done with compasses alone.


||1640: Georg Mohr born ... mathematician and academic.
File:Sophie Germain.jpg|link=Sophie Germain (nonfiction)|1776: Mathematician, physicist, and philosopher [[Sophie Germain (nonfiction)|Sophie Germain]] born. Germain's work on Fermat's Last Theorem will provide a foundation for mathematicians exploring the subject for hundreds of years after.


File:Sophie Germain.jpg|link=Sophie Germain (nonfiction)|1776: Mathematician, physicist, and philosopher [[Sophie Germain (nonfiction)|Sophie Germain]] born. Her work on Fermat's Last Theorem will a foundation for mathematicians exploring the subject for hundreds of years after.
File:William James Sidis 1914.jpg|link=William James Sidis (nonfiction)|1898: Mathematician and anthropologist [[William James Sidis (nonfiction)|William James Sidis]] born. Sidis will become famous first for his precocity and later for his eccentricity and withdrawal from public life.  


||1791: William Snow Harris born ... physician and electrical researcher, nicknamed Thunder-and-Lightning Harris, and noted for his invention of a successful system of lightning conductors for ships. It took many years of campaigning, research and successful testing before the British Royal Navy changed to Harris's conductors from their previous less effective system. One of the successful test vessels was HMS Beagle which survived lightning strikes unharmed on her famous voyage with Charles Darwin. No pic (Beagle).
File:Robin Farquharson.jpg|link=Robin Farquharson (nonfiction)|1973: Mathematician [[Robin Farquharson (nonfiction)|Robin Farquharson]] dies. Farquharson wrote an influential analysis of voting systems in his doctoral thesis, later published as ''Theory of Voting''.
 
||1826: Samuel Morey received a patent for a compressionless "Gas or Vapor Engine".
 
||1850: Chemist Hans von Pechmann born ... he discovered diazomethane in 1894 ... Pechmann condensation and Pechmann pyrazole synthesis.
 
||1863: Jakob Steiner dies ... mathematician who worked primarily in geometry. Pic.
 
||1865: Richard Adolf Zsigmondy born ... chemist and academic, Nobel Prize laureate.
 
||1872: Martin Ohm dies ... mathematician. He was the first to fully develop the theory of the exponential ab when both a and b are complex numbers in 1823. He is also often credited with introducing the name "golden section" (goldener Schnitt).
 
||1874: Ernest Barnes born ... mathematician and theologian.
 
File:Herman_Hollerith.jpg|link=Herman Hollerith (nonfiction)|1891: Inventor and crime-fighter [[Herman Hollerith (nonfiction)|Herman Hollerith]] uses his punched card analyzer to track down and delete the criminal artificial intelligence [[Killer Poke]].
 
File:William James Sidis 1914.jpg|link=William James Sidis (nonfiction)|1898: Mathematician and anthropologist [[William James Sidis (nonfiction)|William James Sidis]] born. He will become famous first for his precocity and later for his eccentricity and withdrawal from public life.
 
||1901: François-Marie Raoult dies ... chemist who conducted research into the behavior of solutions, especially their physical properties. Pic.
 
||1903: Lt. Philip Dalton born ... United States military scientist, pilot and engineer. Dalton is best known for his invention of several slide-rule analog flight computers, the most famous being the E6B. Pic uploaded.
 
||1914: Sophus Mads Jørgensen dies ... chemist. He is considered one of the founders of coordination chemistry. Pic.
 
||1916: Sheila May Edmonds born ... mathematician.
 
||1921: Carl Johannes Thomae dies ... mathematician.  was concerned with function theory and with what German-speaking mathematicians often call "Epsilontik", the precise development of analysis, differential geometry, and topology using epsilon-neighborhoods in the style of Weierstrass. Pic.
 
File:Reddy Kilowatt US patent picture 1933.jpg|link=Reddy Kilowatt (nonfiction)|1933: [[Reddy Kilowatt (nonfiction)|Ready Kilowatt]] performs in off-Broadway adaption of ''[[Reddy Kilowatt Versus the Travelling Salesman Problem]]''.
 
||1960: The TIROS-1 satellite transmits the first television picture from space.
 
||1968: Lev Davidovich Landau dies ... physicist who made fundamental contributions to many areas of theoretical physics.
 
||1970: Ernst Adolph Guillemin dies ... electrical engineer and computer scientist at the Massachusetts Institute of Technology who spent his career extending the art and science of linear network analysis and synthesis. Pic: http://museum.mit.edu/nom150/entries/1125
 
||1971: Kathleen Lonsdale dies ... crystallographer who proved, in 1929, that the benzene ring is flat by using X-ray diffraction methods to elucidate the structure of hexamethylbenzene. She was the first to use Fourier spectral methods while solving the structure of hexachlorobenzene in 1931.
 
File:Robin Farquharson.jpg|link=Robin Farquharson (nonfiction)|1973: Mathematician [[Robin Farquharson (nonfiction)|Robin Farquharson]] dies. He wrote an influential analysis of voting systems in his doctoral thesis, later published as ''Theory of Voting''.
 
File:Yael_Dowker.jpg|link=Yael Dowker (nonfiction)|1974: Mathematician and crime-fighter [[Yael Dowker (nonfiction)|Yael Dowker]] uses measure theory, ergodic theory, and topological dynamics to detect and prevent [[crimes against mathematical constants]].
 
||1976: Apple Inc. is formed by Steve Jobs, Steve Wozniak, and Ronald Wayne in Cupertino, California, USA.
 
||1989: Jan Aleksander Rajchman dies ... electrical engineer and computer pioneer. Pic: https://www.computerhope.com/people/jan_rajchman.htm


File:RFC 3514 IP EVIL INTENT.jpg|link=Evil bit (nonfiction)|2003: Steve Bellovin publishes Request for Comment 5314, subsequently known as the [[Evil bit (nonfiction)|evil bit]] protocol, a humorous April Fool's Day proposal.
File:RFC 3514 IP EVIL INTENT.jpg|link=Evil bit (nonfiction)|2003: Steve Bellovin publishes Request for Comment 5314, subsequently known as the [[Evil bit (nonfiction)|evil bit]] protocol, a humorous April Fool's Day proposal.


File:Genesis spacecraft in collection mode.jpg|link=Genesis (spacecraft) (nonfiction)|2004: After collecting solar wind particles for 850 days, the ''[[Genesis (spacecraft) (nonfiction)|Genesis]]'' ends its collection process. The ''Genesis'' return capsule will crash land in Utah on September 8, 2004, after a design flaw prevents the deployment of its drogue parachute.
File:Tan Lei.jpg|link=Tan Lei (nonfiction)|2016: Mathematician [[Tan Lei (nonfiction)|Tan Lei]] dies.  She specialized in complex dynamics and functions of complex numbers, making contributions to the study of the Mandelbrot set and Julia set.


File:Cantor Parabola.jpg|link=Cantor Parabola|2018: Math photographer [[Cantor Parabola]] attends Minicon 53, taking a series of photographs with temporal superimpositions from Minicons 52 and 54.


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Latest revision as of 06:40, 1 April 2023