Template:Selected anniversaries/February 11: Difference between revisions
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||1939, the journal Nature published a theoretical paper on nuclear fission. The term was coined by the authors Lise Meitner and Otto Frisch, her nephew. They knew that when a uranium nucleus was struck by neutrons, barium was produced. Seeking an explanation, they used Bohr's "liquid drop" model of the nucleus to envision the neutron inducing oscillations in a uranium nucleus, which would occasionally stretch out into the shape of a dumbbell. Sometimes, the repulsive forces between the protons in the two bulbous ends would cause the narrow waist joining them to pinch off and leave two nuclei where before there had been one. They calculated calculated the huge amounts of energy released. This was the basis for nuclear chain reaction. https://pballew.blogspot.com/2019/02/on-this-day-in-math-february-11.html | ||1939, the journal Nature published a theoretical paper on nuclear fission. The term was coined by the authors Lise Meitner and Otto Frisch, her nephew. They knew that when a uranium nucleus was struck by neutrons, barium was produced. Seeking an explanation, they used Bohr's "liquid drop" model of the nucleus to envision the neutron inducing oscillations in a uranium nucleus, which would occasionally stretch out into the shape of a dumbbell. Sometimes, the repulsive forces between the protons in the two bulbous ends would cause the narrow waist joining them to pinch off and leave two nuclei where before there had been one. They calculated calculated the huge amounts of energy released. This was the basis for nuclear chain reaction. https://pballew.blogspot.com/2019/02/on-this-day-in-math-february-11.html | ||
||1942: Egbert | ||1942: Egbert van Kampen dies .. mathematician. He made important contributions to topology, especially to the study of fundamental groups. Pic. | ||
File:Charles Critchfield ID badge.gif|link=Charles Critchfield (nonfiction)|1944: Mathematical physicist and crime-fighter [[Charles Critchfield (nonfiction)|Charles Critchfield]] uses burst of neutrons to detect and prevent [[crimes against physical constants]]. | File:Charles Critchfield ID badge.gif|link=Charles Critchfield (nonfiction)|1944: Mathematical physicist and crime-fighter [[Charles Critchfield (nonfiction)|Charles Critchfield]] uses burst of neutrons to detect and prevent [[crimes against physical constants]]. | ||
Revision as of 08:04, 13 February 2019
1617: Mathematician, cartographer, and astronomer Giovanni Antonio Magini dies. He supported a geocentric system of the world, in preference to Copernicus's heliocentric system.
1618: Writer and alleged troll Culvert Origenes publishes his essay Man's Inhumanity to Man, which will profoundly influence three generations of Enlightenment-era thinkers.
1650: Mathematician and philosopher René Descartes dies. He is remembered as the father of modern Western philosophy.
1760: First known use of Japanese rod calculus to detect and prevent crimes against mathematical constants.
1847: Inventor, engineer, and businessman Thomas Edison born. He will develop the light bulb and the phonograph, among other inventions.
1884: Set theorist and crime-fighter Georg Cantor saves Edward Lear from attack by math criminals.
1898: Physicist and academic Leo Szilard born. He will conceive the nuclear chain reaction in 1933, and patent the idea of a nuclear reactor with Enrico Fermi.
1930: Mathematician, statistician, and crime-fighter Oskar Anderson publishes new theory of mathematical statistics based on Gnomon algorithm functions with applications in the detection and prevention of crimes against mathematical constants.
1931: Engineer and inventor Charles Algernon Parsons dies. He invented the compound steam turbine, and worked on dynamo and turbine design, power generation, and optical equipment for searchlights and telescopes.
- Charles Critchfield ID badge.gif
1944: Mathematical physicist and crime-fighter Charles Critchfield uses burst of neutrons to detect and prevent crimes against physical constants.
1973: Nuclear physicist and Nobel Prize laureate J. Hans D. Jensen dies. He shared half of the 1963 Nobel Prize in Physics with Maria Goeppert-Mayer for their proposal of the nuclear shell model.