Paschen friedrich (13 Ergebnisse)
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Sprache: Deutsch
Verlag: Triltsch Verlag; 1943
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In den WarenkorbBroschiert. Zustand: Gut. 64 Seiten; Das hier angebotene Buch stammt aus einer teilaufgelösten Bibliothek und kann die entsprechenden Kennzeichnungen aufweisen (Rückenschild, Instituts-Stempel.); der Buchzustand ist ansonsten ordentlich und dem Alter entsprechend gut. Sprache: Deutsch Gewicht in Gramm: 260.
Sprache: Deutsch
Verlag: Triltsch Verlag; 1943
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In den WarenkorbBroschiert. Zustand: Gut. 64 Seiten; Das hier angebotene Buch stammt aus einer teilaufgelösten Bibliothek und kann entsprechende Kennzeichnungen aufweisen (Rückenschild, Instituts-Stempel.). Aufgrund des Alters und der häufigen Nutzung können Stabilität, Einband sowie Papierqualität beeinträchtigt sein. Sprache: Deutsch Gewicht…in Gramm: 150.
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Sprache: Deutsch
Verlag: Würzburg, Triltsch 1943
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In den WarenkorbSoftcover. 64 S. Ehem. Bibliotheksexemplar mit Signatur und Stempel. GUTER Zustand, kaum Gebrauchsspuren. 02-842 Sprache: Deutsch Gewicht in Gramm: 550.
Verlag: Calw, Druck Oelschläger 1916
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In den WarenkorbTitel, 3 Bl., 71 S. Orig.-Geheftet. Titel gestempelt. ".vorgelegt von Friedrich Paschen aus Bützow i. Meckl.-Schw." (Titel).
Sprache: Deutsch
Verlag: Leipzig 1889
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In den WarenkorbOktn. mit Rückenheftung. 34 S. - mit einer Knickspur - sonst gut erhalten. // Wir, das Antiquariat Steffen Völkel, kaufen und verkaufen alte Bücher, Handschriften, Zeichnungen, Autographen, Grafiken und Fotografien. Wir sind stets am Ankauf von kompletten Bibliotheken, Sammlungen und Nachlässen interessiert. Sprache: Deutsch Gew…icht in Gramm: 550.
Weitere BilderVerlag: Johann Ambrosius Barth (Arthur Meiner), 1894., In: Annalen der Physik und Chemie, Neue Folge, Vol. 51, 1894. Leipzig: 1894
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In den Warenkorb8vo. Pages (1)-39; (40)-46; (441)-447. [Entire volume: viii, 760 pp.] 1 fig., 3 tables, 1 fig. on plate I. Quarter cloth, cloth tips, paste-paper over boards, gilt spine. Blind-stamp of the Carnegie Institution of Washington, Solar Observatory. Fine. FIRST EDITION. "Friedrich Paschen, 'probably the greatest experimental spectros…copist of his time,' . . . investigated the much mooted question of whether heat alone could bring gases to radiate, demonstrating - in contrast with the results of Ernst Pringsheim - the existence of infrared spectral lines produced by merely heating the gas." DSB, X. DSB, X, pp. 345-346; DSB, XI, pp. 148-151.
Verlag: Charlottenburg & Berlin 1932
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In den WarenkorbHis Scientific Archives Were Destroyed in a Bombing Raid; Only 189 Letters Survive, of which the Five Offered Here are Previously Unknown Paschen, Friedrich (1865-1947). 6 Autograph letters signed to Samuel Goudsmit (1902-78). Charlottenburg or Berlin, January 15, 1932-June 13, 1935. 13pp. total on 7 sheets measuring either 237…x 208 mm. or 286 x 223 mm. Creased where previously folded, with minor soiling and wear along creases, otherwise fine. English translations included. Excellent series of very technical scientific letters to Goudsmit discussing his ongoing investigations in spectroscopy, particularly problems of hyperfine structure and the Zeeman effect. Described by one biographer as "probably the greatest experimental spectroscopist of his time" (quoted in DSB), Paschen, in the words of Niels Bohr, had a "happy intuition" that led him always to "pursue experimentally those problems the investigation of which proved to be of decisive significance for the extension of general theoretical conceptions" (quoted in DSB). Paschen's experimental work in spectroscopy provided some of the most revealing clues to atomic structure; it was particularly useful to Arnold Sommerfeld, whose modifications of Bohr's theory of atomic structure had impressed Paschen so much that he devoted six months to confirming the theory's predictions. During his tenure as professor of physics at the University of Tubingen (1901-24), Paschen made Tubingen into Germany's most important center of atomic spectroscopy. In 1924 he succeeded Nernst as president of the Physikalische-Technische Reichsanstalt, the highest post to which a German experimental physicist could aspire; on May 1, 1933, after the Nazi's seizure of power in Germany, he was forced to retire in favor of the pro-Nazi physicist Johannes Stark. Despite this setback, Paschen was able to continue his laboratory research for a few years afterward-although at the cost of considerable difficulty and personal humiliation, some of which is hinted at in the letters offered here. These six letters from Paschen to Goudsmit are almost exclusively concerned with the scientific investigations performed by the two men during the years 1932-1935; they exemplify the interplay between theoretical and experimental physics so characteristic of Paschen's career. This is particularly apparent in the last four letters (August 22, 1933-June 13, 1935), in which Paschen provided Goudsmit with detailed information on the results of his latest researches: Thank you so much for kindly sending me your and Mr. Bacher's work on anomalies in hyperfine structures. At the same time please accept my cordial congratulations on your wonderful quantitative settlement of the disputed questions regarding Al II and Hg I. For Al everything now appears to be in perfect order. Also, in the meantime I have become convinced that two fine structure components of the two lines 4 1,3F3-nG are simple and do not have any weak companions. Accordingly, the term nG must be split with 0.48 cm-1, as you conclude, and not with 0.35 as I assumed. . . . It is fascinating how the same problem is approached independently from several angles. However, your work is very important because you derive quantitative, definitive results. And in his letter of Aug. 22, 1933: You were so kind to write me concerning the theoretical fundamentals for comprehending the fine structures of the lines of Al II. Since you went to such trouble, I assume that the progress of my work on this topic would be of interest to you and would like to inform you that the publication thereof will not be forthcoming for some time. . . . I have made a study of extensive new material and have progressed to the point that the entire spectrum can be based quite soundly on the values of the fine structure terms. . . . All triplet terms now have two different numerical values corresponding to j + 1/2 and j - 1/2, which are based on the fine structure splitting values that you provided. . . . Paschen's letter of April 28, 1935 praised Goudsmit and Pauling's The Structure of Line Spectra (1930) and discussed Sch ler's article on the hyperfine structures of europium: The book by Pauling and Goudsmit is today the "bible" of the practical spectroscopist. However, your experimental studies, the fundamentals of hyperfine structures, conducted in collaboration with Back, belong to the classic works of spectroscopy. . . . An article by Sch ler and a colleague on hyperfine structures of lines of europium recently appeared in Zeitschrift fur Physik [Journal of Physics]. The authors find violations of the Laude rule and attribute this to the geometric arrangement of nucleus and electron shell. This will certainly be of interest to you. I would like to point out that in this article results of my measurements are also mentioned and are presented in support of the proposed hypothesis. The spectrum In II contains a great many deviations from the Laude rule. However, in any event they involve detectable disturbances of the type that you discussed in the case of mercury two years ago. And in the final letter of June 13, 1935: Your kind letter of May 17 is of great value to my current research and I am very grateful for the effort you put into it. At this time I cannot say very much about the calculations you provided, but you have inspired a renewed testing of fine splittings that will require much time before it is ultimately conclusive. [A detailed numerical analysis of the fine splittings of various terms follows.] . . . I am conveying these details to you since you appear to hold the key for the peculiar splittings of the 1,3F3 terms. I myself am so deeply involved with the measurements and thereby so overloaded with numbers that I cannot yet delve into the theory. However, clarifying the F terms interests me and does not seem to be difficult for you. . . . Similar to the Runge rule for the anomalous Zeeman effects, only whole-number fragments of the splitting fa.
