| SEPTEMBER 1 - BIRTHS | |
| Karl August Folkers | |
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U.S. chemist whose research on vitamins resulted in the isolation of vitamin B12, the only effective agent known in countering pernicious anemia. |
| Dirk Brouwer | |
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Dutch-born U.S. astronomer and geophysicist known for his achievements in celestial mechanics, especially for his pioneering application of high-speed digital computers for astronomical computations. While still a student he determined the mass of Titan from its influence on other Saturnian moons. Brouwer developed general methods for finding orbits and computing errors and applied these methods to comets, asteroids, and planets. He computed the orbits of the first artificial satellites and from them obtained increased knowledge of the figure of the earth. His book, Methods of Celestial Mechanics, taught a generation of celestial mechanicians. He also redetermined astronomical constants. |
| Francis William Aston | |
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British physicist who won the Nobel Prize for Chemistry in 1922 for his development of the mass spectrograph, a device that separates atoms or molecular fragments of different mass and measures those masses with remarkable accuracy. Aston used the mass spectograph to discover a large number of nuclides, or nuclear species. |
| Baron Carl Auer von Welsbach | |
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(baron of Welsbach) Austrian chemist and engineer who invented the gas mantle, thus allowing the greatly increased output of light by gas lamps. |
| Sergei Nikolayevich Winogradsky | |
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Russian microbiologist who helped to establish bacteriology as a major biological science. He was first to isolate the bacteria responsible for nitrification and nitrogen fixation by soil bacteria (1890).Winogradsky also studied bacteria that recycle other vital elements for use by other organisms - including ‘iron bacteria’, and those which metabolize sulfur (1887-9) - deriving metabolic energy from inorganic nutrients. Previously, only organic substrates were considered suitable for microbes. The "Winogradsky column" is still used as an enrichment culture that simulates the muddy habitat of anoxygenic photosynthetic bacteria. |
| Auguste-Henri Forel | |
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Swiss neuroanatomist, psychiatrist, and entomologist known for his investigations of brain structure. Professor of Psychiatry at the University of Zürich and director of the world-famous Burghölzli Hospital, Forel was Adolf Meyer's teacher. Interested in ants from childhood, he became engrossed in the psychology of ants and contributed greatly to the study of their social instincts, leading to his magnum opus in 5 volumes of The Social World of the Ants (1921-23). He was the first to describe the phenomena of parabiosis and lestobiosis in ants. |
| Alfred Ely Beach | |
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American inventor and publisher, whose Scientific American helped stimulate 19th-century technological innovations and became one of the world's most prestigious science magazines. Beach himself invented a tunneling shield and built the pneumatic tube subway (1870). In 1856 he won First Prize and a gold medal at New York's Crystal Palace Exhibition. Beach had invented a typewriter for the blind. It resembled the modern typewriter in the arrangement of its keys and typebars, but embossed its letters on a narrow paper strip instead of a sheet. |
| SEPTEMBER 1 - DEATHS | |
| Luis W. Alvarez | |
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American experimental physicist who was awarded the Nobel Prize for Physics in 1968 for work that included the discovery of many resonance particles (subatomic particles having extremely short lifetimes and occurring only in high-energy nuclear collisions). Alvarez invented a radio distance and direction indicator. During World War II, he designed a landing system for aircrafts and a radar system for locating planes. He participated in the development of the atomic bomb at the Los Alamos Scientific Laboratory, Los Alamos, N.M. (1944-45). He suggested the technique for detonating the implosion type of atomic bomb. Later, he helped develop the hydrogen bubble chamber, used to detect subatomic particles. This research led to the discovery of over 70 elementary particles and resulted in a major revision of nuclear theories. |
| Haskell Brooks Curry | |
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American mathematician who was a pioneer of modern mathematical logic. His research in the foundations of mathematics led him to the development of combinatory logic. Later, this seminal work found significant application in computer science, especially in the design of programming languages. Curry worked on the first electronic computer, called ENIAC, during WW II. He also formulated a logical calculus using inferential rules. In 1942, he published Curry's paradox, which occurs in naive set theory or naive logics, and allows the derivation of an arbitrary sentence from a self-referring sentence and some apparently innocuous logical deduction rules.« |
| Lillian D. Wald | |
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Scientist, nurse, influential in establishing a nationwide system of nurses in public schools. Known as "Angel of Henry Street" (New York City) because, for more than 40 years, Wald directed the Henry Street Visiting Nurse Service, while at the same time tirelessly opposing political and social corruption. She helped initiate revision of child labor laws, improved housing conditions in tenement districts, enactment of pure food laws, education for the mentally handicapped, and passage of enlightened immigration regulations. |
| SEPTEMBER 1 - EVENTS | |
| Exotic meson | |
| Atomic testing resumed | |
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| Passenger pigeon | |
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| Gramophone patented | |
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| Sources of all energy | |
| Antiseptic surgery | |
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| Solar flare | |
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| First transatlantic cable failure | |
| Asteroid | |
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| Botanical garden | |
