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‎"WIEN, WILHELM.‎

Reference : 50328

(1904)

‎Über die Differentialgleichungen der Elektrodynamik für bewegte Körper. I-II.‎

‎Leipzig, Ambrosius Barth, 1904. 8vo. In contemporary half calf with four raised bands and gilt lettering to spine. In ""Annalen der Physik"", Vierte Folge, Band 13. Entire volume offered. Stamp to title page. Wear to extremities. Internally fine and clean. Pp. 641-662" Pp. 663-668. [Entire volume: 1079, VIII pp. + 8 plates.].‎


‎First appearance of Wien's two papers on differential equations on the electrodynamics of moving bodies. ‎

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DKK1,200.00 (€160.95 )

‎"WIEN, WILHELM.‎

Reference : 50367

(1904)

‎Über die Differentialgleichungen der Elektrodynamik für bewegte Körper. I-II.‎

‎Leipzig, Ambrosius Barth, 1904. 8vo. In full black cloth with gilt lettering to spine. In ""Annalen der Physik"", Vierte Folge, Band 13. Entire volume offered. Library labels to front end papers and stamp to title page, otherwise fine and clean. Pp. 641-662" Pp. 663-668. [Entire volume: 1079, VIII pp. + 8 plates.].‎


‎First appearance of Wien's two papers on differential equations on the electrodynamics of moving bodies. ‎

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DKK1,000.00 (€134.12 )

‎"WIEN, WILHELM.‎

Reference : 50546

(1905)

‎Über die Energie der Kathodenstrahlen im Verhaltnis zur Energie der Rontgen- und Sekundarstrahlen.‎

‎(Leipzig, Johann Ambrosius Barth, 1905). 8vo. No wrappers. Extracted from ""Annalen der Physik"" Vierte Folge. Bd. 18. Entire issue no. 15 offered. Pp. 991-1007. [Entire issue: Pp. 869-1084 + 6 folded plates.].‎


‎First appearance of Wien's paper on the energy of cathode rays in relation to the energy of the X-ray and secondary rays.‎

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DKK950.00 (€127.42 )

‎"WIEN, WILLY. [WILHELM]. - A FUNDAMENTAL PAPER OF MODERN PHYSICS.‎

Reference : 43069

(1896)

‎Ueber die Energievertheilung im Emissionsspectrum eines schwarzen Körpers. - [WIEN'S DISPLACEMENT LAW]‎

‎Leipzig, Johann Ambrosius Barth, 1896. 8vo. Contemporary half cloth with gilt title to spine. Band 58 of ""Annalen der Physik und Chemie"". Library stamp to verso of title-page. Light wear to edges and capitals and a damp-stain to the lower part of the last three leaves. Otherwise a clean and well preserved copy. The entire volume offered. Pp. 662-669. [Entire volume: VIII, 776 pp. + 6 folded plates].‎


‎First edition of Wilhelm Wien's highly influential paper on the phenomenon of radiation, also known as Wien's displacement law. Wien followed Ludwig Boltzmann's approach when incorporating electrodynamics and thermodynamics in investigating radiation and its characteristics. ""He argued that if a system reaches the same temperature by the increase of temperature or by the adiabatic compression of the volume containing heat radiation, it should yield the same energy distribution. Considering also the Doppler effect of the radiation, Wien arrived at an expression for energy distribution that states that the product of temperature and the wave length is a constant"". (Mathew Chandrankunnel, Philosophy of physics, 2000, 4 p).Wien's empirical observations functioned as a starting point for Max Planck who wanted prove the theoretical foundation for Wien's, wishing thus to justify the entropy law. Today Wien's approximation is also known as Wien-Planck law.This phenomenon was coined ""Wien's displacement law"" because the energy density curve is displaced correspondingly to the temperature"" it implies that the hotter an object is, the shorter the wavelength at which it will release most of its radiation. Wien's description of radiation awarded him the Nobel Prize in Physics in 1911. Wien's constant is today used in a wide range of different aspects of physics, e.g. cosmic microwave background, and the determination of how much energy is emitted from a light bulb. Magie, ""A Source Book in Physics"". Pp. 597-600.Other papers of interest contained in the present volume:KOHLRAUSCH, F. Ueber Widerstandsmessungen von Electrolyten mit Wechselströmen durch das Dynamometer. Pp. 514-516.BOLTZMANN, L. Zur Energetik. Pp. 595-598.RYDBERG, J. J. Die Neuen Grundstoffe des Cleveïtgases. Pp. 674-679.WIEN, W. Ueber die auf einer schweren Flüssigkeit möglichen Wellen von sehr Höhe. Pp. 729-735.Etc.‎

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DKK6,000.00 (€804.73 )

‎"WIEN, WILLY. (WILHELM). - DETERMINING THE MASS AND VELOCITY OF CANAL RAYS.‎

Reference : 43653

(1898)

‎Untersuchung über die electrische Entladung in verdünnten Gasen. (Erste - Zweite Abhandlung). (2 Papers).‎

‎Berlin, J.A. Barth, 1898, 1901 Without wrappers. In ""Annalen der Physik und Chemie. Hrsg. von G. Wiedemann."", Neue Folge, Bd. 65, No. 7. (Entire issues offered). Pp. 241-480. . And Vierte Folge, Bd. 5. Pp. 241-488, textillustr. Wien's paper pp. 440-452, textillustrations and pp. 421-435, textillustrations. Clean and fine. The second issue punched in inner margin after cords., no loss of text.‎


‎First appearance of Wien's importent paper in which he shows that the cathode rays are particles, that their velocity is about a third to that of light and he establish the ratio between the mass and the charge.In the paper are ""described the experiments by which Wien determined the properties of the canal rays. The firstpart of the paper conatins a description of observations on the cathode rays, made with a Lenard Tube, in which the cathode rays passed through an aluminium window into an extension of the tube where as high a rarefaction as possible was maintained. The magnetic and electrostatic deflexions of a narrow cathode stream were observed and Wien concludes that it is proved by his investigation that the cathode rays which pass through the windoww carry with them strong negative charges.""(Magie ""Souce Book in Physics"", p. 597 ff.).Wien was awarded the 1911 Nobel Prize for physics for his discoveries regarding laws governing the radiation of heat.‎

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DKK2,000.00 (€268.24 )
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