Template:Selected anniversaries/April 5: Difference between revisions
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||1909: Siegfried Knemeyer born ... German aeronautical engineer, aviator and the Head of Technical Development at the Reich Ministry of Aviation of Nazi Germany during World War II. Pic. | ||1909: Siegfried Knemeyer born ... German aeronautical engineer, aviator and the Head of Technical Development at the Reich Ministry of Aviation of Nazi Germany during World War II. Pic. | ||
||1933: Hjalmar Mellin dies ... mathematician and theorist dies. He is known for the Mellin transform. Pic. | ||1933: Hjalmar Mellin dies ... mathematician and theorist dies. He is known for the Mellin transform. Pic. | ||
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||1975: Ralph Austin Bard dies ... financier who served as Assistant Secretary of the Navy, 1941–1944, and as Under Secretary, 1944–1945. He is noted for a memorandum he wrote to Secretary of War Henry L. Stimson in 1945 urging that Japan be given a warning before the use of the atomic bomb on a strategic city. He was "the only person known to have formally dissented from the use of the atomic bomb without advance warning." Pic. | ||1975: Ralph Austin Bard dies ... financier who served as Assistant Secretary of the Navy, 1941–1944, and as Under Secretary, 1944–1945. He is noted for a memorandum he wrote to Secretary of War Henry L. Stimson in 1945 urging that Japan be given a warning before the use of the atomic bomb on a strategic city. He was "the only person known to have formally dissented from the use of the atomic bomb without advance warning." Pic. | ||
File:Isaac Asimov.jpg|link=Isaac Asimov (nonfiction)|1976: Writer and crime-fighter [[Isaac Asimov (nonfiction)|Isaac Asimov]] publishes ''Two Plus Two Opens the Door'', an introduction to [[Gnomon algorithm functions]] for children, which will influence a generation of [[mathematicians]]. | |||
File:Howard Hughes 1940s.jpg|link=Howard Hughes (nonfiction)|1976: Businessman, investor, aviator, film director, and philanthropist [[Howard Hughes (nonfiction)|Howard Hughes]] dies. He was known during his lifetime as one of the most financially successful individuals in the world. | File:Howard Hughes 1940s.jpg|link=Howard Hughes (nonfiction)|1976: Businessman, investor, aviator, film director, and philanthropist [[Howard Hughes (nonfiction)|Howard Hughes]] dies. He was known during his lifetime as one of the most financially successful individuals in the world. | ||
Revision as of 03:14, 5 October 2020
1523: Cryptographer and diplomat Blaise de Vigenère (nonfiction) 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.
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.
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.
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.
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.