Notes on Recent Researches in Electricity and Magnetism: Intended as a Sequel to Professor Clerk-Maxwell's Treatise on Electricity and MagnetismCambridge University Press, 1893 - 578 pages This 1893 publication is a central text in the work of the Nobel prize winning physicist Sir Joseph John Thomson (1858-1940). Intended as an extension of James Clerk Maxwell's Treatise on Electricity and Magnetism, it documents the important shift in Thomson's thinking towards the model of the atomic electric field, a theory that would eventually lead to his discovery of the electron. In Chapter 1, Thomson documents his experiments with Faraday tubes, using them to physically demonstrate a 'molecular theory of electricity'. Chapter 2 considers the discharge of electricity through gases, Chapter 3 theories of electrostatics, and Chapters 4-6 are primarily concerned with alternating currents. In addition to providing crucial insight into Thomson's evolving theory of the atom, Recent Researches underscores his commitment to experimental physics, which offers 'all the advantages in vividness which arise from concrete qualities rather than abstract symbols'. |
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Autres éditions - Tout afficher
Notes on Recent Researches in Electricity and Magnetism: Intended as a ... Joseph John Thomson Affichage du livre entier - 1893 |
Notes on Recent Researches in Electricity and Magnetism: Intended as a ... Joseph John Thomson Affichage du livre entier - 1893 |
Notes on Recent Researches in Electricity and Magnetism: Intended as a ... Joseph John Thomson Affichage du livre entier - 1893 |
Expressions et termes fréquents
air gap alternating currents approximately ax+by+pt axis base line cathode circuit coil components conductor cos² cylinder dielectric direction discharge passes distance dx dy dy dz effect electrical vibrations electrodes electromagnetic electromotive force electromotive intensity energy equal equation experiments expression Faraday tubes hence Hertz hydrogen incident wave light lines of magnetic Lord Rayleigh magnetic field magnetic force magnetic induction magnetic permeability millimetre mirror molecules mz+pt negative oscillations parallel Phil placed plane of incidence positive tubes potential difference pressure produced quantity radial radius reflected wave resonator right angles rotation S₁ self-induction spark length sparks pass specific inductive capacity sphere surface tendency to spark theory tion vanish velocity vibrator wave length wire αμ
Fréquemment cités
Page 503 - DCL Part I. On the rights and Duties of Nations in time of Peace. New Edition, Revised and Enlarged. 8vo, 15*.
Page 330 - The discharge, whatever may be its nature, is not correctly represented (employing for simplicity the theory of Franklin) by the single transfer of an imponderable fluid from one side of the jar to the other; the phenomena...
Page 330 - This anomaly which has remained so long unexplained, and which at first sight appears at variance with all our theoretical ideas of the connection of electricity and magnetism, was after considerable study satisfactorily referred by the author to an action of the discharge of the Leyden jar which had never before been recognized. The discharge, whatever may be its nature, is not correctly represented (employing for simplicity the theory of Franklin) by the single transfer of an imponderable fluid...
Page vii - Professor of Experimental Physics." JJ intended that his second book, Notes on Recent Researches in Electricity and Magnetism, serve as a sequel to Maxwell's Treatise on Electricity and Magnetism. "I have endeavoured," he wrote, "to give an account of some recent electrical researches, experimental as well as theoretical, in the hope that it may assist students to gain some acquaintance with the recent progress of Electricity and yet retain Maxwell's Treatise as the source from which they learn the...
Page 187 - Thus, according to the view we are now discussing, chemical decomposition is not to be considered merely as an accidental attendant on the electrical discharge, but as an essential feature of the discharge, without which it could not occur.
Page 330 - Franklin) by the single transfer of an imponderable fluid from one side of the jar to the other ; the phenomena require us to admit the existence of a principal discharge in one direction, and then several reflex actions backward and forward, each more feeble than the preceding, until equilibrium is obtained. All the facts are shown to be in accordance with this hypothesis, and a ready explanation is afforded by it of a number of phenomena which are found in the older works on electricity, but which...
Page 105 - ... discharge passes through the bulb, while when the magnet is on no discharge at all can be detected. The action is very striking, and the explanation of it which seems to fit in best with the phenomena I have observed is that the discharge through the rarefied gas does not rise to its full intensity suddenly, but as it were feels its way. The gas first breaks down along the line where the electromotive intensity is a maximum, and a small discharge takes place along this line. This discharge produces...
Page 445 - The scattered light produced by the incidence of a plane polarized wave vanishes in the plane through the centre at right angles to the magnetic induction in the incident wave along a line making an angle of 120° with the radius to the point at which the wave first strikes the sphere and it does not vanish in any direction other than this. Thus, if non-polarized waves of light or of electric...
Page viii - Bacon's dictum that the best results are obtained when a research begins with Physics and ends with Mathematics ... The use of a physical theory will help to correct the tendency - which I think all will admit is by no means uncommon - to look on analytical processes as the modern equivalent of the Philosopher's Machine in the Grand Academy of Lagado, and to regard as the normal process of investigation in this subject the manipulation of a large number of symbols in the hope that every now and then...
Page 445 - ... a plane through the centre of the sphere at right angles to the direction of the incident light. When the light is scattered by a conducting sphere, the points...