Template:Selected anniversaries/July 30: Difference between revisions
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File:Jean-Antoine Chaptal.jpg|link=Jean-Antoine-Claude Chaptal (nonfiction)|1832: Chemist, physician, agronomist, industrialist, statesman, educator, and philanthropist [[Jean-Antoine-Claude Chaptal (nonfiction)|Jean-Antoine-Claude Chaptal]] dies. | File:Jean-Antoine Chaptal.jpg|link=Jean-Antoine-Claude Chaptal (nonfiction)|1832: Chemist, physician, agronomist, industrialist, statesman, educator, and philanthropist [[Jean-Antoine-Claude Chaptal (nonfiction)|Jean-Antoine-Claude Chaptal]] dies. | ||
||1849: Jacob Perkins dies ... inventor, mechanical engineer and physicist. Born in Newburyport, Massachusetts, Perkins was apprenticed to a goldsmith. He soon made himself known with a variety of useful mechanical inventions and eventually had twenty-one American and nineteen English patents. He is known as the father of the refrigerator. Pic. | ||1849: Jacob Perkins dies ... inventor, mechanical engineer and physicist. Born in Newburyport, Massachusetts, Perkins was apprenticed to a goldsmith. He soon made himself known with a variety of useful mechanical inventions and eventually had twenty-one American and nineteen English patents. He is known as the father of the refrigerator. Pic. | ||
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||2010: Qian Weichang dies ... physicist and applied mathematician. He was generally acknowledged as one of the pioneers and founders of modern mechanics undertakings in China. His major research activities include; the intrinsic theory of plates and shells, the analysis of large deflection of thin plates and shells, the analysis of corrugated pipes, mechanics of armour penetration, singular perturbation methods, variational principles and generalized variational principles, finite element methods as well as the measurements of atmospheric electricity, spectral analysis of rare-earth elements, wave guide theory, lubrication theory, the development of high-energy batteries, his macro-coding of Chinese characters, etc. The joint work with J. L. Synge on the intrinsic theory of plates and shells is considered as a pioneering classical work in solid mechanics and his successive approximation method of treating large deflection problem is now named as "Chien's method". Pic. | ||2010: Qian Weichang dies ... physicist and applied mathematician. He was generally acknowledged as one of the pioneers and founders of modern mechanics undertakings in China. His major research activities include; the intrinsic theory of plates and shells, the analysis of large deflection of thin plates and shells, the analysis of corrugated pipes, mechanics of armour penetration, singular perturbation methods, variational principles and generalized variational principles, finite element methods as well as the measurements of atmospheric electricity, spectral analysis of rare-earth elements, wave guide theory, lubrication theory, the development of high-energy batteries, his macro-coding of Chinese characters, etc. The joint work with J. L. Synge on the intrinsic theory of plates and shells is considered as a pioneering classical work in solid mechanics and his successive approximation method of treating large deflection problem is now named as "Chien's method". Pic. | ||
||2016: András Hajnal born ... professor of mathematics ... work in set theory and combinatorics. The Hajnal–Szemerédi theorem on equitable coloring, proving a 1964 conjecture of Erdős: let Δ denote the maximum degree of a vertex in a finite graph G. Then G can be colored with Δ + 1 colors in such a way that the sizes of the color classes differ by at most one. Pic: http://dimacs.rutgers.edu/archive/DIMACS_highlights/hajnal/hajnal.html | ||2016: András Hajnal born ... professor of mathematics ... work in set theory and combinatorics. The Hajnal–Szemerédi theorem on equitable coloring, proving a 1964 conjecture of Erdős: let Δ denote the maximum degree of a vertex in a finite graph G. Then G can be colored with Δ + 1 colors in such a way that the sizes of the color classes differ by at most one. Pic: http://dimacs.rutgers.edu/archive/DIMACS_highlights/hajnal/hajnal.html | ||
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Latest revision as of 11:37, 7 February 2022
1832: Chemist, physician, agronomist, industrialist, statesman, educator, and philanthropist Jean-Antoine-Claude Chaptal dies.
1864: American Civil War: Battle of the Crater: Union forces attempt to break Confederate lines at Petersburg, Virginia by exploding a large bomb under their trenches.
1974: Watergate scandal: U.S. President Richard Nixon releases subpoenaed White House recordings after being ordered to do so by the Supreme Court of the United States.