Template:Selected anniversaries/April 5: Difference between revisions

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||1881: Hermann von Helmholtz presented The Faraday Lecture before the Fellows of the Chemical Society in London. His topic was The Modern Development of Faraday's Conception of Electricity. Helmholtz recognized Michael Faraday as being the person who most advanced the general scientific method, saying “His principal aim was to express in his new conceptions only facts, with the least possible use of hypothetical substances and forces.” *TIS  https://pballew.blogspot.com/2019/04/on-this-day-in-math-april-5.html
||1881: Hermann von Helmholtz presented The Faraday Lecture before the Fellows of the Chemical Society in London. His topic was The Modern Development of Faraday's Conception of Electricity. Helmholtz recognized Michael Faraday as being the person who most advanced the general scientific method, saying “His principal aim was to express in his new conceptions only facts, with the least possible use of hypothetical substances and forces.” *TIS  https://pballew.blogspot.com/2019/04/on-this-day-in-math-april-5.html
||1886: Frederick Alexander Lindemann, 1st Viscount Cherwell born - British physicist who was prime scientific adviser to Winston Churchill in World War II. Pic.


File:Joseph Bertrand.jpg|link=Joseph Bertrand (nonfiction)|1900: Mathematician, economist, and academic [[Joseph Bertrand (nonfiction)|Joseph Louis François Bertrand]] dies. He worked in the fields of number theory, differential geometry, probability theory, economics and thermodynamics.
File:Joseph Bertrand.jpg|link=Joseph Bertrand (nonfiction)|1900: Mathematician, economist, and academic [[Joseph Bertrand (nonfiction)|Joseph Louis François Bertrand]] dies. He worked in the fields of number theory, differential geometry, probability theory, economics and thermodynamics.

Revision as of 19:09, 26 November 2021

  • 1523: Cryptographer and diplomat Blaise de Vigenère born. The Vigenère cipher will be misattributed to him; Vigenère himself will devise a different, stronger cipher.

    1523: Cryptographer and diplomat Blaise de Vigenère born. The Vigenère cipher will be misattributed to him; Vigenère himself will devise a different, stronger cipher.

  • 1524: Painter, engraver, mathematician, and freelance APTO journalist Albrecht Dürer publicly accuses the House of Malevecchio of committing a wide range of crimes against mathematical constants, including shape theft.

    1524: Painter, engraver, mathematician, and freelance APTO journalist Albrecht Dürer publicly accuses the House of Malevecchio of committing a wide range of crimes against mathematical constants, including shape theft.

  • 1622: Mathematician and scientist Vincenzo Viviani born. In 1660, Viviani and Giovanni Alfonso Borelli will conduct an experiment to determine the speed of sound. Timing the difference between the seeing the flash and hearing the sound of a cannon shot at a distance, they will calculate a value of 350 meters per second (m/s), considerably better than the previous value of 478 m/s obtained by Pierre Gassendi.

    1622: Mathematician and scientist Vincenzo Viviani born. In 1660, Viviani and Giovanni Alfonso Borelli will conduct an experiment to determine the speed of sound. Timing the difference between the seeing the flash and hearing the sound of a cannon shot at a distance, they will calculate a value of 350 meters per second (m/s), considerably better than the previous value of 478 m/s obtained by Pierre Gassendi.

  • 1684: William Brouncker dies. Brouncker introduced Brouncker's formula, and was the first President of the Royal Society.

    1684: William Brouncker dies. Brouncker introduced Brouncker's formula, and was the first President of the Royal Society.

  • 1827: Surgeon and scientist Joseph Lister born. He will pioneer antiseptic surgery, performing the first antiseptic surgery in 1865.

    1827: Surgeon and scientist Joseph Lister born. He will pioneer antiseptic surgery, performing the first antiseptic surgery in 1865.

  • 1869: Physicist, mathematician, and engineer Sergey Chaplygin born. He will be known for mathematical formulas such as Chaplygin's equation, and for a hypothetical substance in cosmology called Chaplygin gas, named after him.

    1869: Physicist, mathematician, and engineer Sergey Chaplygin born. He will be known for mathematical formulas such as Chaplygin's equation, and for a hypothetical substance in cosmology called Chaplygin gas, named after him.

  • 1870: Adventurer Wallace War-Heels publishes autobiography.

    1870: Adventurer Wallace War-Heels publishes autobiography.

  • 1900: Mathematician, economist, and academic Joseph Louis François Bertrand dies. He worked in the fields of number theory, differential geometry, probability theory, economics and thermodynamics.

    1900: Mathematician, economist, and academic Joseph Louis François Bertrand dies. He worked in the fields of number theory, differential geometry, probability theory, economics and thermodynamics.

  • 1976: Writer and crime-fighter Isaac Asimov publishes Two Plus Two Opens the Door, an introduction to Gnomon algorithm functions for children, which will influence a generation of mathematicians.

    1976: Writer and crime-fighter Isaac Asimov publishes Two Plus Two Opens the Door, an introduction to Gnomon algorithm functions for children, which will influence a generation of mathematicians.

  • 1976: Businessman, investor, aviator, film director, and philanthropist Howard Hughes dies. He was known during his lifetime as one of the most financially successful individuals in the world.

    1976: Businessman, investor, aviator, film director, and philanthropist Howard Hughes dies. He was known during his lifetime as one of the most financially successful individuals in the world.

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