Template:Selected anniversaries/August 17: Difference between revisions
No edit summary |
No edit summary |
||
| Line 16: | Line 16: | ||
||1862 – American Indian Wars: The Dakota War of 1862 begins in Minnesota as Lakota warriors attack white settlements along the Minnesota River. | ||1862 – American Indian Wars: The Dakota War of 1862 begins in Minnesota as Lakota warriors attack white settlements along the Minnesota River. | ||
||Paul Kammerer ( | ||1880: Paul Kammerer born ... biologist, he claimed to have produced experimental evidence that acquired traits could be inherited. Almost all of Kammerer's experiments involved forcing various amphibians to breed in environments that were radically different from their native habitat to demonstrate Lamarkian inheritance. (This is the idea that what one acquires during one's lifetime is passed on to that person's offspring. If you play guitar, your children will have nimble fingers. Each generation builds upon the past and continues to improve.) When later accused of faking exceptional results with the midwife toad, during a time of depression, he shot himself. Pic. | ||
||1893: Walter Noddack born ... chemist who discovered the element rhenium (Jun 1925) in collaboration with his wife Ida Tacke. In 1922, he began a long search for undiscovered elements. After three years, the careful fractionation of certain ores yielded element 75, a rare heavy metallic element that resembles manganese. Named rhenium after the Rhine River, it was the last stable element to be discovered. Noddack is also remembered for arguing for a concept he called allgegenwartskonzentration or, literally, omnipresent concentration. This idea, reminiscent of Greek philosopher Anaxagoras, assumed that every mineral actually contained every element. The reason they could not all be detected was they existed in too small quantities. Pic: https://sciencenotes.org/today-in-science-history-december-7-walter-noddack/ | |||
||1896 – Leslie Groves, American general and engineer (d. 1970) | ||1896 – Leslie Groves, American general and engineer (d. 1970) | ||
Revision as of 09:40, 15 August 2018
1807: Robert Fulton's North River Steamboat leaves New York City for Albany, New York, on the Hudson River, inaugurating the first commercial steamboat service in the world.
1904: Physicist, chemist, and crime-fighter Marie Curie condemns Extract of Radium as "a terrible hazard to health and sanity."
1927: Mathematician Erik Ivar Fredholm dies. He introduced and analyzed a class of integral equations now called Fredholm equations. Fredholm's work on integral equations and operator theory anticipated the theory of Hilbert spaces.
1929: Captain and pilot Francis Gary Powers born.
1930: Film director and arms dealer Egon Rhodomunde begins shooting his film Spy Pilot.
1970: Soviet spacecraft Venera 7 launched from Earth. It will become the first successful soft landing on another planet (Venus).
1996: Lorenz system develops self-awareness, spontaneous seeks out and fights crimes against mathematical constants.