572 



INDEX. 



Law of motion, Newton's, 95, 96 



Layer, equipotential, 165 



Layers, equipotential, as screens, 289 



Leakage, magnetic, 482 



Lecher, 556 



Legendre, differential equation of, 189 



polynomial of, 188 

 Length, unit of, 97 

 Lenz, 467, 471, 476 



law of, 137, 471 

 Level sheet, 58 



surface, 20 

 Leyden jar, 488, 490, 499 

 Light, electromagnetic theory of, 517 

 Limits, 2 



,, of functions, 14 

 Linear conductors, 336 



,, ,, resistance of, 343 



,, current, force due to, 421 

 Lines of force, 145 



,, ,, equations of, 194 



Linking of circuits, 410 

 Lipschitz, 302 

 Lodge, 488, 490, 511 

 Logarithm, 89, 90 

 Logarithmic decrement, 487 

 potential, 175 



transformation, 322 



Machines, electrical induction, 286 

 Maclaurin, 209, 210 

 Magnetic density, 352 

 energy, 352 

 field, 351 



,, due to current-sheet, 449 



force due to current, 409, 436 



leakage, 482 

 ,, potential, 352 

 ,, ,, due to current, 409 



,, resistance, 360 

 ,, shell, current equivalent to, 412 

 ,, solenoid, 352 

 Magnetism, true, 358 



unit of, 366 



Magnetization, 352 



induced, of cylinder, 377 



,, ,, of hollow sphere, 



378 



residual, 389 



,, uniform, of ellipsoid, 370 



,, ,, of sphere, 371 



Magnetomotive- force, 453 

 Magnetostatics and electrostatics, paral- 

 lel treatment of, 353 

 Magnets, 226, 351 



and currents, mutual energy 



of, 444 



,, permanent, 389 

 Magnification, 84 

 Map, 199 

 Maseart, 457 

 Mass, definition of, 97 



unit of, 98 

 Matter, 91 

 Maximum or minimum of harmonic 



function, 154 



,, theorem for energy, 233 



Maxwell, 56, 59, 65, 67, 97, 139, 243, 

 251, 302, 324, 339, 384, 399, 407, 420, 

 431, 436, 439, 444, 446, 457, 461, 466, 

 467, 481, 505, 506, 507, 508, 516, 517, 

 521, 524, 557 

 Mean, arithmetical, 39 



,, distance, geometrical, 461 

 ,, quadratic, 479 

 ,, theories of the, 41 

 Mechanical force on conductor, 440 



,, on element of circuit, 



426 

 Medium, action of, 354 



effect of dielectric, 247 

 eolotropic, 510 

 heterogeneous, effect of, 441 



stress in, 384 

 Megohm, 417 

 Mendenhall, 159 

 Mercator's projection, 200, 350 

 Metre prototype, 97 

 Michelson, 97 

 Microfarad, 417 



Minimum condition for equilibrium, 111 

 ,, ,, in Dirichlet's Prin- 



ciple, 170 



in Fourier-Ohm law, 331 

 Models, mechanical, of induction, 139, 



149, 477 

 Modulus, 8 



Moment of polarized distribution, 242 

 Momentum, generalized component of, 



121 



Monocyclic system, 137 

 Monogenic charge, 260 



