mcmillan edwin (19 Ergebnisse)

Soft cover. Zustand: Fair. Photographs Throughout (illustrator). First Edition Thus. Front Cover Detached, Spine Chipped. [We Also Have A Panoramic Photo Of The June 1923 Commencement In The Rose Bowl, Then Known As "The Stadium", Available Separately).

Soft cover. Zustand: Good. Photographs Throughout (illustrator). First Edition Thus. Cobvers Chipped And Stained. [We Also Have A Panoramic Photo Of The June 1923 Commencement In The Rose Bowl, Then Known As "The Stadium", Available Separately).

Soft cover. Zustand: Good. Photographs Throughout (illustrator). First Edition Thus. Covers loose from page block, otherwise a solid copy. Class photo of later Nobel laureate Edwin McMillan.

Zustand: New. In.

Zustand: New. In.

Soft cover. Zustand: Good. Photographs Throughout (illustrator). First Edition Thus. A solid copy. Class photo of Nobel laureate Edwin McMillan.

Zustand: New. In.

Soft cover. Zustand: Good. Photographs Throughout (illustrator). First Edition Thus. A solid copy. Class photo of Nobel laureate Edwin McMillan.

Zustand: New. In.

Zustand: New. In.

28.5 cm, gebundene Ausgabe. Zustand: Gut. 334 S. mit Abb. Lese- und Lagerspuren, Einband berieben, bestossen und ohne Schutzumschlag, Schnitt angestaubt, Besitzvermerk auf Vorsatz / Gutes Exemplar / NW.Physik A-Z 22438 NW.Physik Sprache: Englisch Gewicht in Gramm: 2500.

Zustand: New.

Gebunden. Zustand: New.

Zustand: Good. Preface by Edwin M. McMillan. 4to. 68 pp., illus. Very good in wraps, prev. owner's name on cover.

4to. 1 p. Gedr. Briefkopf. An eine Sammlerin, der er mitteilt, über keine Manuskripte mehr zu verfügen. - Mit eigenh. Kuvert mit eigenh. Absender.

100 : 150 mm. Brustbild von vorn. - 1951 wurde ihm zusammen mit Glenn T. Seaborg der Nobelpreis für Chemie verliehen.

130 : 180 mm. Hübsches Kniestück im Halbprofil mit Pfeife. - 1951 wurde ihm zusammen mit Glenn T. Seaborg der Nobelpreis für Chemie verliehen.

First Edition. Offprint, 8vo (267 × 200mm), p. 1, printed on the recto only. Some short marginal tears and old tape stains, else very good. Signed by McMillan. This single-page note, dated February 17, 1939, from Berkeley's Radiation Laboratory, was published within weeks of Hahn and Strassmann's announcement of uranium fission and belongs to the intense, disorienting period in which laboratories around the world were racing to characterize what neutron bombardment of uranium actually produced. The field had not yet stabilized: the identities, ranges, and decay properties of the activation products were still being sorted experimentally, and the theoretical framework for understanding fission was still being assembled. This paper is significant both as a primary document of that moment and as the opening move in the line of investigation that would lead McMillan, the following year, to the discovery of neptuniumthe first transuranium element and the achievement for which he shared the Nobel Prize in Chemistry in 1951. Investigating the radioactive recoil products generated by cyclotron neutron irradiation of uranium oxide, McMillan stacks thin aluminum foils in contact with the target during bombardment and measures the distribution of induced activity across successive foils as a function of depth. The resulting absorption profile is interpreted as evidence for recoiling fission fragments with a finite range estimated at 2.2 ± 0.2 cm air-equivalent. Decay analysis resolves two principal components: a short-lived activity of approximately 25 minutes, tentatively associated with a uranium isotope produced by resonance neutron capture as identified by Hahn, Meitner, and Strassmann, and a longer-lived component of roughly two days. McMillan observes that the total recoil activity is comparable in magnitude to the residual activity remaining in the uranium sample itself, and argues that a sufficiently finely divided uranium preparation would permit physical separation of the recoiling fragments from the non-recoiling activation products; a methodological inference that points directly toward the experimental approach he would employ in isolating neptunium the following year.

Genf, "CERN", 6. VIII. 1974, Fol. 1 Seite. Briefkopf. An Alexander Dées de Sterio in Frankfurt-Höchst: "[.]I am unable to write on paper of my institute [.] as I am on a seven-month visit at CERN, so I am using CERN paper. Alex, I don't have any photographs of myself here so I will write to my secretary at Berkeley to send you one that I signed previously. I found the meeting of chemists very stimulating, being a physicist who happened to receive the prize in chemistry, and having attended before only the meetings of physicists at Lindau, once four years ago, and once for just two days some years before that. Lindau and Bad Schachen remain in my memory with great affection, and the meetings can only be described as intellectual feasts where many ideas are exchanged [.]" - McMillan erhielt 1951 für die Arbeiten auf dem Gebiet der Transuranelemente zusammen mit Glenn Theodore Seaborg den Nobelpreis für Chemie. - Druck in Alexander Dées de Sterio, Nobel führte sie zusammen, Stuttgart 1975, S. 127.