HALL, Edwin (Herbert), "On the 'Rotational Coefficient' in Nickel and Cobalt" and Allan MARQUAND "On Logical Diagrams for n Terms" both in the London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science".

Edwin HALL and Allan MARQUAND. **The Hall Effect AND a Logic Machine**

Edité par London, Taylor & Francis, 1881

A propos de cet article

HALL, Edwin (Herbert), (US. American, 1855-1939). "On the 'Rotational Coefficient' in Nickel and Cobalt" in the London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science" printed in London, Taylor & Francis, September 1881, volume 12 no. 74. The Edwin Hall appears on pp 157-172 in the full volume of vi, (ii), 452pp., 11 plates (some folding). There is some fairly heavy foxing in the first 10pp and the last 8pp or so, otherwise the text is mostly very crisp and clean. There's also an old small rubber stamp at the bottom of the title page. A FINE copy but for that restricted bit of foxing. [++] Newly and beautifully rebound in half calf and marbled boards, with raised bands and dentelle decorations. [++] This is the second paper by Hall on the discovery of the effect that bears his name. "Hall is best known for the effect bearing his name; it formed the basis of his Ph.D. dissertation and was the subject of many of his later researches. He was stimulated by Rowland to question a statement in Maxwell s Electricity and Magnetism that the force acting on a conductor in a magnetic field acts on the conductor directly and not on the electric current. Hall s experimental persistence was rewarded when he found that a current through a gold conductor in a magnetic field produced an electric potential perpendicular to both the current and the field. The notion that this was due to simple interaction between the current and the field had to be abandoned, however, when other metals were found for which the effect was in a direction opposite to that predicted. **Hall s discovery was termed by Kelvin as comparable with the greatest ever made by Michael Faraday.** It sparked interest in studies in this area, and three other transverse effects were soon discovered; they bear the names of Andreas von Ettingshausen, Walther Nernst, and Augusto Righi and Sylvestre Leduc."--Hall, Edwin Herbert." Complete Dictionary of Scientific Biography, vol. 6, Charles Scribner's Sons, 2008, pp. 51-52. [++] "The Hall effect is named after Edwin Hall, who in 1879 observed that electrons moving longitudinally along a metal strip (under the influence of an electric field) will, if also subject to a magnetic field perpendicular to the plane of the strip, be deflected toward the side of the strip. Because of this, an excess of charge will build up one side of the strip. This Hall voltage is proportional to the strength of the magnetic field. That is, a plot of Hall voltage (or equivalently the electrical resistance of the material to the sideways current flow) versus field strength would be linear. All of this can be explained in terms of classical physics."--Philip F. Schewe, "Elucidating the Hall Effect" in the APS News, December 1998, vol 7 number 11. ASLO BOUND WITH: Allan Marquand, "On Logical Diagrams for n Terms" pp 266-270, with diagrams. [++] "An art historian at Princeton University and a curator of the Princeton University Art Museum, he graduated from Princeton in 1874, and obtained his Ph.D. in Philosophy in 1880, at the Johns Hopkins University. His thesis, supervised by Charles Sanders Peirce, was on the logic of Philodemus.During the 1881/82 academic year, he built a mechanical logical machine that is still extant; he was inspired by related efforts of William S. Jevons in the UK. In 1887, following a suggestion of Peirce's, he outlined a machine to do logic using electric circuits."--IT History online (Marquand).

N° de réf. du vendeur ABE-1705860573946

Détails bibliographiques

• Titre: HALL, Edwin (Herbert), "On the 'Rotational Coefficient' in Nickel and Cobalt" and Allan MARQUAND "On Logical Diagrams for n Terms" both in the London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science".
• Éditeur: London, Taylor & Francis
• Date de parution: 1881
• Reliure: Hardcover
• État de l'article: Very Good
• Poids: 1 livre
• Catalogues du vendeur:
  • Computing History
  • Physics