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. | ||
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||1910: Miguel Najdorf born ... chess player and theoretician. Pic. | ||1910: Miguel Najdorf born ... chess player and theoretician. Pic. | ||
File:Johannes Bosscha.jpg|link=Johannes Bosscha (nonfiction)|1911: Physicist [[Johannes Bosscha (nonfiction)|Johannes Bosscha Jr.]] dies. | 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. | ||
||1921: Cosmonaut Georgy Beregovoy cosmonaut born ... will command space mission Soyuz 3 in 1968. At the time of his flight, Beregovoy was 47 years of age: he was the earliest-born human to go to orbit, being born three months and three days earlier than the second earliest-born man in orbit – John Glenn, but later than X-15 pilot Joe Walker who made 2 (or 3, according to USAF definition) suborbital space flights. Pic (postage stamp). | ||1921: Cosmonaut Georgy Beregovoy cosmonaut born ... will command space mission Soyuz 3 in 1968. At the time of his flight, Beregovoy was 47 years of age: he was the earliest-born human to go to orbit, being born three months and three days earlier than the second earliest-born man in orbit – John Glenn, but later than X-15 pilot Joe Walker who made 2 (or 3, according to USAF definition) suborbital space flights. Pic (postage stamp). | ||
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||1952: Alexander Crichton Mitchell dies ... physicist with a special interest in geomagnetics who worked for many years in India as a professor and head of a meteorological observatory before returning to Scotland. He then worked with the Royal Navy to devise a system, known as an anti-submarine indicator loop, for detecting submarines by detecting currents induced in a loop of wire on the sea floor. Pic: http://indicatorloops.com/mitchell.htm | ||1952: Alexander Crichton Mitchell dies ... physicist with a special interest in geomagnetics who worked for many years in India as a professor and head of a meteorological observatory before returning to Scotland. He then worked with the Royal Navy to devise a system, known as an anti-submarine indicator loop, for detecting submarines by detecting currents induced in a loop of wire on the sea floor. Pic: http://indicatorloops.com/mitchell.htm | ||
||1983: Vera Faddeeva dies ... mathematician. Faddeeva published some of the first work in the field of linear algebra. Her 1950 work, ''Computational methods of linear algebra'', was widely acclaimed; she won a USSR State Prize for it. | ||1983: Vera Faddeeva dies ... mathematician. Faddeeva published some of the first work in the field of linear algebra. Her 1950 work, ''Computational methods of linear algebra'', was widely acclaimed; she won a USSR State Prize for it. Pic. | ||
||1983: Corrie ten Boom dies ... clocksmith Nazi resister, and author. Same DOB/DOD. Pic. | ||1983: Corrie ten Boom dies ... clocksmith Nazi resister, and author. Same DOB/DOD. Pic. | ||
Revision as of 05:09, 15 April 2020
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.
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: The San Pietro scrying engine spontaneously generates birthday greetings for the newborn Leonhard Euler.
1764: Astronomer and mathematician Peder Horrebow dies. he invent a way to determine a place's latitude from the stars.
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.
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.
1925: Chemist, X-ray crystallographer, and crime-fighter Rosalind Franklin publishes Gnomon algorithm model which anticipates the use of DNA (deoxyribonucleic acid) to detect and prevent crimes against chemistry.
1926: Aviator 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.
1983: Mathematician and alleged time-traveller Edward Lorenz publishes new class of Gnomon algorithm functions which use the butterfly effect to detect and prevent crimes against mathematical constants.
