Template:Selected anniversaries/April 1: Difference between revisions
No edit summary |
No edit summary |
||
| Line 8: | Line 8: | ||
||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. Pic: ''Beagle''. | ||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. Pic: ''Beagle''. | ||
||1826: Samuel Morey received a patent for a compressionless "Gas or Vapor Engine". | ||1826: Samuel Morey received a patent for a compressionless "Gas or Vapor Engine". Pic search maybe: https://www.google.com/search?q=samuel+morey | ||
||1850: Chemist Hans von Pechmann born ... he discovered diazomethane in 1894 ... Pechmann condensation and Pechmann pyrazole synthesis. | ||1850: Chemist Hans von Pechmann born ... he discovered diazomethane in 1894 ... Pechmann condensation and Pechmann pyrazole synthesis. | ||
| Line 16: | Line 16: | ||
||1865: Richard Adolf Zsigmondy born ... chemist and academic, Nobel Prize laureate. | ||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). | ||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). Pic. | ||
||1874: Ernest Barnes born ... mathematician and scientist who later became a liberal theologian and bishop. Pic. | ||1874: Ernest Barnes born ... mathematician and scientist who later became a liberal theologian and bishop. Pic. | ||
Revision as of 07:02, 25 March 2019
1776: Mathematician, physicist, and philosopher Sophie Germain born. Her work on Fermat's Last Theorem will a foundation for mathematicians exploring the subject for hundreds of years after.
1891: Inventor and crime-fighter Herman Hollerith uses his punched card analyzer to track down and delete the criminal artificial intelligence Killer Poke.
1898: Mathematician and anthropologist William James Sidis born. He will become famous first for his precocity and later for his eccentricity and withdrawal from public life.
1933: Ready Kilowatt performs in off-Broadway adaption of Reddy Kilowatt Versus the Travelling Salesman Problem.
1973: Mathematician Robin Farquharson dies. He wrote an influential analysis of voting systems in his doctoral thesis, later published as Theory of Voting.
1974: Mathematician and crime-fighter Yael Dowker uses measure theory, ergodic theory, and topological dynamics to detect and prevent crimes against mathematical constants.
2003: Steve Bellovin publishes Request for Comment 5314, subsequently known as the evil bit protocol, a humorous April Fool's Day proposal.
2004: After collecting solar wind particles for 850 days, the 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.
2016: Chromatographic analysis of Eye Foot reveals "at leave five hundred and twelve" previously unknown shades of gray.
2016: Mathematician 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.
2018: Math photographer Cantor Parabola attends Minicon 53, taking a series of photographs with temporal superimpositions from Minicons 52 and 54.