Cathode rays (3 Ergebnisse)
Nouvelles propriétés des rayons cathodiques.
"PERRIN, (JEAN BAPTISTE). - CATHODE RAYS ARE NEGATIVELY CHARGED PARTICLES.
- Softcover
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In den Warenkorb(Paris, Gauthier-Villars), 1895. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 121, No 27. Pp. (1105-) 1181. (Entire issue offered). Small nicks to right margins of the first 2 leaves. A small tear to right margins of leaves, not affecting the text. Perrin's paper: pp. 1130-113…4, 2 textillustr. leaves fragile due to the paper quality. First appearance of this importent paper in which Perrin gives an account of the experiment by which he showed thet the cathode discharge carried negative electric charges with it. A similar experiment was soon afterward carried (1897) out by J.J. Thomson leading to his discovery of the electron and its properties."Jean Perrin publishes a paper. (the paper offerd), in which he describes an experiment supporting the speculations of William Crookes, Joseph John Thomsonm, and others that the cathode rays consist of negatively charged matter moving with considerably velocity." (Parkinson "Breakthroughs", 1895 P.).Magee "Source Book in Physics", p. 580 ff.
Ueber die Elektricitätsleitung der Gase. Erste- Dritte Mittheilung. (3 papers in 4 parts).
"HITTORF, W. (JOHANN WILHELM). - CATHODE RAYS - EARLY TELEVISION.
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In den WarenkorbLeipzig, Johann Ambrosius Barth, 1869, 1874, 1879. Contemp. hcalf, raised bands, gilt spine with gilt lettering. A few scratches to binding. In "Annalen der Physik und Chemie. Hrsg.von Poggendorff", Bd. 136. X,644 pp. and 8 folded engraved plates. (The entire volume offered). Hittorf's paper: pp. 1-31 a. 197-234. With 2 engraved… plates showing apparatus. + (2. Mitth.) Jubelband (Poggendorff) pp. 430-445. (Extracted) + (3. Mitth.) Annalen, Neue Folge Bd. VII, No 8. Pp. 497-680 a. 1 plate (entire issue offered). Hittorf's paper: pp. 558-631. First appearance of these main paper in the development of Television, and an importent step towards the discovery of Röntgen-Rays, as Hittorf describes his discovery how the cathode glow spread toward the anode, how solid objects near the cathode would cast shadows in the phosphorescent glow in the glass, and that this glow was produced by raylike emanations that traveled in straight lines from the cathode rays."Following Plückers studies, in 1869 Hittorf began a series of investigations of the discharge phenomena. He verified the effect of the magnetic field on the glow discharge and the fluorescence of the glass tube itself. He found that any solid or fluid body, whether an insulator or a conductor, when placed in front of the cathode cut off the glow. By constructing an L-shaped tube with electrodes at the two ends, Hittorf was able to establish that the glow was generated from a point cathode and traveled in straight lines. "We will therefore speak of rectilinear path or rays of glow, and consider any point of the cathode as the source of a cone of rays" .These results led the brilliant researches on gaseous conduction by Crookes ten years later (1879) and the eventual identification of the cathode rays as electrons by J.J. Thomson (1897)."(DSB, VI, p.439).(Shiers & Shiers "Early Televison. A Bibliography to 1940", No.45). - Magie "A Source Book in Physics", p. 561 ff.
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In den WarenkorbLeipzig, Johann Ambrosius Barth, 1859. Without wrappers as issued in "Annalen der Physik und Chemie. Hrsg.von Poggendorff", Bd. 107, Viertes Stück.(= Heft No. 8 of 1859). (The entire issue offered (Heft 4 of vol. 107 with titlepage to vol. 107). Pp. 497-660. - Plücker's papers: pp. 497-539 a. 638-643. Clean and fine. First print…ing of this milestone paper describing Plückers first observations on Cathode Rays, which he called "the beautiful and mysterious green glow", and produced by discharges in tubes exhausted by means of the Geissler pump. These importent observations lead directly to Röntgens discovery of the Röntgen Rays."Cathode rays were first observed by Julius Plücker in 1859 (the paper offered). They are rays which are found in the neighbourhood of the point of exit of an electrical current passing through a Geissler tube. These rays stimulated intense interest and experiment. William Crookes greatly improved these discharge tubes and intensified the degree of rarification of gases within them. The tubes in this form is known as Crookes tube. Crookes declared his conciction that the cathode rays represented matter in a fourth, hitherto unobserved form.It was reserved for J.J. Thomson (in 1908) to discover the true nature of the cathode rays."(PMM no 386).