Template:Selected anniversaries/January 19: Difference between revisions

Revision as of 12:50, 29 April 2018

1618: Johannes Kepler uses Gnomon algorithm functions to prevent crimes against laws of planetary motion.
1755: Physicist, mathematician, and astronomer Jean-Pierre Christin dies. He invented the Celsius thermometer.
1833: Mathematician and academic Alfred Clebsch born. He will make important contributions to algebraic geometry and invariant theory.
1878: Chemist and physicist Henri Victor Regnault dies. He was an early thermodynamicist, best known for his careful measurements of the thermal properties of gases, and for mentoring William Thomson in the late 1840s.
1883: The first electric lighting system employing overhead wires, built by Thomas Edison, begins service at Roselle, New Jersey.
1884: Electrical engineer and crime-fighter Zénobe Gramme uses what will later be called the Gramme Device to detect and prevent crimes against mathematical constants.
1915: Georges Claude patents the neon discharge tube for use in advertising.
2015: Engineer and inventor Justin Capră dies. He designed fuel-efficient cars, unconventional engines, aircraft, and jet backpacks.
2016: Army research laboratories convert modern plowshares into ancient swords. Military contractors call technique "Astonishing breakthrough."

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 ||Johann Elert Bode (b. 19 January 1747) was a German astronomer known for his reformulation and popularisation of the Titius–Bode law. Bode determined the orbit of Uranus and suggested the planet's name. Pic.
-||1755 – Jean-Pierre Christin, French physicist, mathematician, and astronomer (b. 1683)
+File:Termómetro_Christin_1743.jpg|link=Jean-Pierre Christin (nonfiction)|1755: Physicist, mathematician, and astronomer [[Jean-Pierre Christin (nonfiction)|Jean-Pierre Christin]] dies. He invented the Celsius thermometer.
 ||1798 – Auguste Comte, French economist, sociologist, and philosopher (d. 1857)