INDEX. 



Abampere, definition of, 98 

 Abcoulomb, definition of, 161 

 Abfarad, definition of, 166 

 Abhenry, definition of, 143 

 Abohm, definition of, 99 

 Absolute electrometer, the, 183 



measurements, 276 



units, 98 



Abvolt, definition of, 99 

 Aging of permanent magnets, 83 

 Alloys, resistivities of, 28 

 Alternating current, 125 

 Alternating-current dynamo, the, 125 



transformer, mechanical ana- 

 logue of, 195 

 the, 133 



electromotive force, 125 

 Alternator, see alternating-current dy- 

 namo 



Aluminum, manufacture of, 5 

 Ammeters and voltmeters, 42 

 Ammeter, the, 2 



shunts, 49 

 Ampere, definition of, 98 



the international standard, 8 

 Analogies, mechanical and electrical, 342 

 Anion, definition of, 6, 10 

 Anode, definition of, 5 

 Arc, the electric, 232 



lamp, the naming, 340 

 the magnetite, 340 

 Armature of direct-current dynamo, 128 



of the alternator, 1 26 

 Astatic system of magnets, 112 

 Atmospheric electricity, 321 

 Attraction, electrostatic, 163 



Ballistic galvanometer, the, 161, 285 

 Battery, the electric, see voltaic cell 

 the storage, see storage cell 



Bell telephone, the, 322 

 Bismuth inductometer, the, 290 

 Blow-out, the magnetic, 152 

 Branched circuits, 44 

 Branly's coherer, 336 

 Brush discharge, the, 216 



Calcium carbide, manufacture of, 26 

 Canal rays, 227 

 Capacity, electrostatic, 165 

 measurement of, 165, 286 

 mechanical analogue of, 168 

 units of, 1 66 



Carbon transmitter, the, 333 

 Carhart, H. S., Determination of Elec- 

 trochemical Equivalent of Silver, 

 8 



On the Thermodynamics of the Vol- 

 taic Cell, 35 



and Patterson, Electrical Measure- 

 ments, 162 



Cathion, definition of, 6, 10 

 Cathode, definition of, 5 



rays, 227 

 Centimeter, the, as a unit of inductance, 



'43 



Charge, concentrated, electric field due 



to, 179 



electric, see electric charge 

 Charges, concentrated, attraction and re- 

 pulsion of, 1 80 

 Charging by contact and separation, 199 



by influence, 202 

 Chemical effect of the electric current, i, 



4,5 



Choke coil, the, 151 

 Chromic-acid cell, 14 

 Circular mil, definition of, 27 

 Clarke standard cell, 1 6, 284 

 "Climax" metal, 28, 30 



345 



