Libby willard frank (7 Ergebnisse)
Collected Papers; Volume I, Tritium and Radiocarbon
Libby, Willard Frank, and Berger, Rainer (Editor), and Libby, Leona Marshall (Editor)
Sprache: Englisch
Verlag: Geo Science Analytical, Inc, Santa Monica, CA, 1981
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Trade paperback. Zustand: Good. Presumed First Edition, First printing. Various paginations (640 pages per bibliographic reference). Footnotes. Figures. Tables. References. Ex-Los Alamos National Laboratory with usual library markings. Back cover tear. This collection of W. F. Libby's papers contains all those on Radiocarbon and… Tritium Dating and Tracing. The papers are introduced briefly by either a collaborator or the editors. After the war, Libby accepted an offer from the University of Chicago of a professorship in the Chemistry Department at the new Institute for Nuclear Studies. He returned to his studies of radioactivity. In 1939, Serge Korff had discovered that cosmic rays generated neutrons in the upper atmosphere. These interact with nitrogen-14 in the air to produce carbon-14: 1n + 14N 14C + 1p. The half-life of carbon-14 is 5,730±40 years. Libby realized that when plants and animals die they cease to ingest fresh carbon-14, thereby giving any organic compound a built-in nuclear clock. He published his theory in 1946 and expanded on it in his monograph Radiocarbon Dating in 1955. He also developed sensitive radiation detectors that could use the technique. Tests against sequoia with known dates from their tree rings showed radiocarbon dating to be reliable and accurate. The technique revolutionized archaeology, paleontology and other disciplines that dealt with ancient artifacts. In 1960, he was awarded the Nobel Prize in Chemistry "for his method to use carbon-14 for age determination in archaeology, geology, geophysics, and other branches of science". He also discovered that tritium similarly could be used for dating water, and therefore wine. Willard Frank Libby (December 17, 1908 - September 8, 1980) was an American physical chemist noted for his role in the 1949 development of radiocarbon dating, a process which revolutionized archaeology and paleontology. For his contributions to the team that developed this process, Libby was awarded the Nobel Prize in Chemistry in 1960. A 1931 chemistry graduate of the University of California, Berkeley, from which he received his doctorate in 1933, he studied radioactive elements and developed sensitive Geiger counters to measure weak natural and artificial radioactivity. During World War II he worked in the Manhattan Project's Substitute Alloy Materials (SAM) Laboratories at Columbia University, developing the gaseous diffusion process for uranium enrichment. After the war, Libby accepted professorship at the University of Chicago's Institute for Nuclear Studies, where he developed the technique for dating organic compounds using carbon-14. He also discovered that tritium similarly could be used for dating water, and therefore wine. In 1950, he became a member of the General Advisory Committee (GAC) of the Atomic Energy Commission (AEC). He was appointed a commissioner in 1954, becoming its sole scientist. He sided with Edward Teller on pursuing a crash program to develop the hydrogen bomb, participated in the Atoms for Peace program, and defended the administration's atmospheric nuclear testing. Libby resigned from the AEC in 1959 to become Professor of Chemistry at University of California, Los Angeles (UCLA), a position he held until his retirement in 1976. In 1962, he became the Director of the University of California statewide Institute of Geophysics and Planetary Physics (IGPP).
"Radiocarbon Dating". Gedruckte Nobelpreisrede mit eigenh. U.
Libby, Willard Frank, Chemiker und Nobelpreisträger (1908-1980).
Sprache: Englisch
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In den WarenkorbStockholm, 1961, Fol. 18 Seiten. Geklammert. Libby, ein Pionier der Radiochemie und Isotopenforschung, arbeitete von 1951 bis 1945 am Manhattan-Projekt zur Entwicklung der Atombombe. 1060 erhielt der den Nobelpreis für Chemie "für die Entwicklung der Radiokohlenstoffmethode zur Bestimmung des Alters archäologischer Funde".
Eigenh. Unterschrift auf Albumblatt.
Libby, Willard Frank, US-amerikanischer Chemiker und Physiker (1908-1980).
Verlag: ohne Ort und Jahr
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In den Warenkorb32mo. 1 p. Unterschrift auf Kärtchen. - Für die Entwicklung der Radiokohlenstoffmethode zur Bestimmung des Alters archäologischer Funde erhielt er 1960 den Nobelpreis für Chemie.
Eigenh. Unterschrift auf Visitenkarte.
Libby, Willard Frank, US-amerikanischer Chemiker und Physiker (1908-1980).
Verlag: Los Angeles
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In den WarenkorbQuer-32mo. 1 p. Für die Entwicklung der Radiokohlenstoffmethode zur Bestimmung des Alters archäologischer Funde erhielt er 1960 den Nobelpreis für Chemie.
Portraitphotographie mit eigenh. U.
Libby, Willard Frank, US-amerikanischer Chemiker und Physiker (1908-1980).
Verlag: o. O. u. D.
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In den Warenkorb250 : 200 mm. Hübsches Brustbild von vorn. - Für die Entwicklung der Radiokohlenstoffmethode zur Bestimmung des Alters archäologischer Funde erhielt er 1960 den Nobelpreis für Chemie.
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In den WarenkorbChicago, Illinois: Institute for Nuclear Studies, University of Chicago, 1951. 1951, 1952, 1954. 4to. All 4 with orig. printed wrappers, being offprints from "Science" (Vol. 113, 114,116 a. 119). - 10 pp., 6 pp., 9,(1) pp., 6 pp. Light marginal stain to the first work. First editions, off-prints, of all four papers, which togeth…er constitute the first printed results of radiocarbon dating, based on samples gathered by Libby and his co-workers. It was due to this discovery, which revolutionized the practice of archaeology and other branches of science (e.g. geology, geophysics, etc.), that Libby received the Nobel Prize in 1960. Willard F. Libby (1908-80) was a skilled chemist who is remembered today for having developed the process of carbon-14 dating, which is now of the utmost importance to several branches of science. Libby studied chemistry at Berkeley, California, from where he obtained his doctorate in 1933" here he stayed on as, first instructor and then, associate professor. In 1941 he was recruited into the Manhattan Project. After the war he became professor at the University of Chicago, at the Institute for Nuclear Studies. It was here that he made his seminal discovery, namely that a hitherto rarely noticed isotope of carbon, that called carbon-14, was absorbed by plants through photosynthesis and that after a plant died, it would no longer absorb the carbon-14, causing its remains to gradually lose the carbon-14 that it had accumulated through radioactive decay. Thus, by measuring how much carbon-14 was left in the dead plant material, it would be possible to determine when it died. Libby now developed a method for measuring the carbon-14 content, and he began testing his technique (also on things, the dates of which were already known) and found that it applied to all locations everywhere.The isotope carbon-14 had first been isolated in 1940 by two of Libby's students while working on the atomic bomb project. It had been shown that carbon 14 was continually being formed by cosmic rays colliding with atmospheric nitrogen. Libby surmised that traces should always be found in air's carbon dioxide, and that carbon 14 could be detected by modern devices in all products of life such as archaeology, geology, geophysics, and other branches of science. It was in 1950 that he reduced the small amount of ancient wood to pure carbon, and in measuring its radioactivity, he deduced its age. After the announcement of this result, scientists from around the worlds presented him with samples of items to date. Naturally, Libby's discovery caused general excitement within scientific circles archaeologists, geologists etc. now only needed something organic (e.g. wood, plant remains, charcoal etc.) to possibly date a find. The method is surprisingly accurate and only when dating things more than 10.000 years old, does it become less accurate. Libby received the Nobel Prize in 1960 for his discovery of methods to use carbon 14.
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In den WarenkorbSigned vintage photograph, shows Willard Frank Libby in a chest-up portrait, 8 x 11 inch, signed dark felt tip "With best wishes - W. F. Libby", with very mild signs of wear - in nearly very fine condition.
