Template:Selected anniversaries/September 22: Difference between revisions
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||1912: Herbert Mataré born ... physicist and academic ... the focus of his research was the field of semiconductor research. His best-known work is the first functional "European" transistor, which he developed and patented together with Heinrich Welker in the vicinity of Paris in 1948, at the same time and independently from the Bell Labs engineers. Pic. | ||1912: Herbert Mataré born ... physicist and academic ... the focus of his research was the field of semiconductor research. His best-known work is the first functional "European" transistor, which he developed and patented together with Heinrich Welker in the vicinity of Paris in 1948, at the same time and independently from the Bell Labs engineers. Pic. | ||
||1918: Charles Duncan Michener born ... entomologist ... leading expert on bees, his magnum opus being ''The Bees of the World''. Michener's work on social evolution in the Halictidae in the 1960s helped set the stage for the sociobiology revolution of the 1970s, with E. O. Wilson relying to a great degree on Michener's concepts regarding the paths from solitary to highly social life. Pic. | |||
||1921: Theoretical chemist and academic Robert Parr born. Working with DuPont chemist Rudolph Pariser, Parr developed a method of computing approximate molecular orbitals for pi electron systems, published in 1953. Since an identical procedure was derived by John A. Pople the same year, it is generally referred to as the Pariser-Parr-Pople method or PPP method. The PPP method differed from existing structural chemistry thinking by advancing the concept of zero differential overlap approximation. Pic search yes: https://www.google.com/search?q=Robert+Parr | ||1921: Theoretical chemist and academic Robert Parr born. Working with DuPont chemist Rudolph Pariser, Parr developed a method of computing approximate molecular orbitals for pi electron systems, published in 1953. Since an identical procedure was derived by John A. Pople the same year, it is generally referred to as the Pariser-Parr-Pople method or PPP method. The PPP method differed from existing structural chemistry thinking by advancing the concept of zero differential overlap approximation. Pic search yes: https://www.google.com/search?q=Robert+Parr | ||
Revision as of 11:37, 2 February 2020
1547: Philologist, mathematician, astronomer, and poet Philipp Nicodemus Frischlin born. His prolific and versatile genius will produce a great variety of works, but his reckless life and libelous letters will lead to imprisonment.
1624: Math photographer Cantor Parabola captures unprecedented images of Renaissance-era crimes against mathematical constants.
1703: Mathematician and scientist Vincenzo Viviani dies. In 1660, Viviani and Giovanni Alfonso Borelli conducted 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 calculated a value of 350 meters per second (m/s), considerably better than the previous value of 478 m/s obtained by Pierre Gassendi.
1900: Mathematician, engineer, and Gnomon algorithm researcher Philbert Maurice d’Ocagne invents a nomogram which detects the Forbidden Ratio.
1970: Physician, research scientist, and author Alice Hamilton dies. She was a leading expert in the field of occupational health and a pioneer in the field of industrial toxicology.
1974: Physicist Winfried Otto Schumann dies. He predicted the existence of Schumann resonances, a series of low-frequency resonances caused by lightning discharges in the atmosphere.
1976: Mathematician and crime-fighter Shoshichi Kobayashi uses transformation groups of geometric structures to detect and prevent crimes against mathematical constants.
2012: Mathematician, author, activist, and academic Irving Adler dies. He was a plaintiff in the McCarthy-era case Adler vs. Board of Education.
2013: Signed first edition of Skip Digits, Conductor stolen; US Treasury investigators say money trail leads to Baron Zersetzung.
2014: The MAVEN probe reaches Mars and is inserted into an areocentric elliptic orbit 6,200 km (3,900 mi) by 150 km (93 mi) above the planet's surface.
2016: Two Creatures 2 is declared Picture of the Day by the citizens of New Minneapolis, Canada.
2017: Dennis Paulson celebrates third anniversary the MAVEN probe reaching Mars.