115848-01
On the illumination of lines of molecular pressure.
(London, Selbstverlag, 1878). - (29,5 x 23 cm). SS. 135-164. Mit 22 Abbildungen und 1 farbig lithographierten Tafel. Rückenbroschur. (Aus: Proceedings of the Royal Society).
Einzige Ausgabe seiner Bakerian Lecture. - "In 1878 Crookes began a new series of research papers with the conviction 'that this dark space coating (the cathode in low-pressure electrical discharges) was in some way related to the layer of molecular pressure causing movement in the radiometer'. By attempting to determine the actual paths of 'lines of molecular pressure' on the analogy of Faraday's lines of magnetic force, Crookes came to work on the cathode rays, which until then had been the exclusive province of German experimentalists. An electric radiometer whose vanes acted as a cathode showed that the dark space separating the cathode from the cathode glow extended farther from the blackened side of the vane, and that only when the pressure was reduced to a point at which the dark space touched the sides of the radiometer tube did rotation occur. This suggested that the electric discharge in an evacuated tube (a 'Crookes tube') was an actual illumination of the lines of molecular pressure" (DSB). - Erstes und letztes Blatt gering fleckig, sonst gut erhalten. - DSB 3, 474
On the illumination of lines of molecular pressure.
(London, Selbstverlag, 1878). - (29,5 x 23 cm). SS. 135-164. Mit 22 Abbildungen und 1 farbig lithographierten Tafel. Rückenbroschur. (Aus: Proceedings of the Royal Society).
Einzige Ausgabe seiner Bakerian Lecture. - "In 1878 Crookes began a new series of research papers with the conviction 'that this dark space coating (the cathode in low-pressure electrical discharges) was in some way related to the layer of molecular pressure causing movement in the radiometer'. By attempting to determine the actual paths of 'lines of molecular pressure' on the analogy of Faraday's lines of magnetic force, Crookes came to work on the cathode rays, which until then had been the exclusive province of German experimentalists. An electric radiometer whose vanes acted as a cathode showed that the dark space separating the cathode from the cathode glow extended farther from the blackened side of the vane, and that only when the pressure was reduced to a point at which the dark space touched the sides of the radiometer tube did rotation occur. This suggested that the electric discharge in an evacuated tube (a 'Crookes tube') was an actual illumination of the lines of molecular pressure" (DSB). - Erstes und letztes Blatt gering fleckig, sonst gut erhalten. - DSB 3, 474
350 €