INDEX" OF SUBJECTS. 65 1 



CHAPTER III. PARTICULAR CASES. 



PAGE 



Action of Two Parallel Currents 465 



Angular Currents 465 



Apparent Repulsion of Two Consecutive Elements of Current 466 



Electromagnetic Rotation. Barlow's Wheel 467 



Ampere's Experiment 468 



Rotation of Liquids 469 



Davy's Experiment 469 



M. Jamin's Experiment 469 



M. Berlin's Experiment 469 



Electrodynamic Rotation 470 



Action of a Uniform Field 470 



Astatic Circuits 472 



Rotation of a Current under the Action of the Earth 473 



Action of Two Rectangular Circuits 475 



Properties of Circular Currents 477 



Electromagnetic Solenoid 478 



Cylindrical Coil 478 



Annular Coil 479 



Case of any Given Surface 480 



Ampere's Theory of Magnetism 481 



Magnetisation by Currents. Consequent Points 483 



Examples of Magnetisation 484 



Measurement of Currents. Galvanometers 486 



Tangent Galvanometer 487 



Electrodynamometers 488 



Measurement of Discharges 488 



CHAPTER IV. INDUCTION. 



Faraday's Discovery 491 



Lenz's Law 493 



Neumann's Theorem 493 



Theory of Helmholtz and Thomson 493 



General Law of Induction 497 



Coefficients of Induction 498 



Electromagnetic Induction 498 



Electrodynamic Induction 500 



Intrinsic Energy of the Current 500 



CHAPTER V. PARTICULAR CASES OF INDUCTION. 



Electromagnetic Resistance is a Velocity 503 



Closed Circuit in a Uniform Field 505 



Determination of the Inclination by Induction Currents 506 



