536 



Index 



Torsion balance, 11 

 Transformer, theory of, 455 

 Tubes of force (electrostatic), 44 



,, of force (magnetic), 3GO 



,, of induction, 375 



of flow, 330 

 Two-fluid theory of electrical phenomena, 



20 



Unicursal curves (conformal representation of), 



264 



Units, 507 



,, of electricity, 14 



,, of capacity, 77 



of current, 295, 416 



ratio of, 506 



Vector-potential, 381 

 Volta's law, 298 

 Voltaic cell, 297 



Water, inductive capacity of, 349, 514 



,, refractive index of, 514 

 Wave-propagation, equation of, 501 



,, in isotropic dielectrics, 498 



,, in crystalline dielectrics, 



528 



,, in metallic media, 521 



Weber, theory of magnetism, 3, 406, 492 



theory of diamagnetism, 493 

 Wheatstone's Bridge, 304, 305 



Zonal harmonics, 228 



CAMBRIDGE : PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS. 



