xxviii
CONTENTS.
Conduction in Dielectrics.
Art.
Page
325. In a strictly homogeneous medium there can be no internal charge
374
326. Theory of a condenser in which the dielectric is not a perfect insulator
375
327. No residual charge due to simple conduction
376
328. Theory of a composite accumulator
376
329. Residual charge and electrical absorption
378
330. Total discharge
380
331. Comparison with the conduction of heat
381
332. Theory of telegraph cables and comparison of the equations with those of the conduction of heat
381
333. Opinion of Ohm on this subject
384
334. Mechanical illustration of the properties of a dielectric
385
Measurement of the Electric Resistance of Conductors.
335. Advantage of using material standards of resistance in electrical measurements
388
336. Different standards which have been used and different systems which have been proposed
388
337. The electromagnetic system of units
389
338. Weber's unit, and the British Association unit or Ohm
389
339. Professed value of the Ohm metres per second
389
340. Reproduction of standards
390
341. Forms of resistance coils
391
342. Coils of great resistance
392
343. Arrangement of coils in series
392
344. Arrangement in multiple arc
393
345. On the comparison of resistances. (1) Ohm's method
394
346. (2) By the differential galvanometer
394
347. (3) By Wheatstone's Bridge
398
348. Estimation of limits of error in the determination
399
349. Best arrangement of the conductors to be compared
400
350. On the use of Wheatstone's Bridge
402
351. Thomson's method for small resistances
404
352. Matthiessen and Hockin's method for small resistances
406
