Induction 51 123
Infinitely long conductor, an 19
Influence of a magnetic field on the Peltier effect 149
Influence of a magnetic field on the thermo-electric power of metals 148
Influence of a magnetic field on the Thomson effect 149
Influence of heat on magnetic phenomena 153
Inglis 162
Intense magnetic fields 24
Intensity of magnetization 33
Intensity of magnetization and magnetic suceptibility 30
Interferometer 107
Inverse Wiedemann effect 120
Iron 157 169
Iron cores 23
Iron filings 1 2 3 25
Ishiwara 93 101 156
Isoclinal lines 182
Isogonals 182
Isolated electric charge 124
Ives 141
Jamin 130
Jewett 140
Joffe 209
Jones and Molam 140
Joule 106 108 111 117
Joule effect 105
Kapitza 11 24 25 67 102 141
Karapetoff 5 10
Kaya 141
Kelvin 59 147
Kennard 131
Kennelly 61
Kennelly’s law 61
Kerr 67 169 170 171 173
Kerr constant 172 218
Kerr effect 169
Kilogausses 25 30
Kimball 116 131
King 205
Kirchhoff 18
Kirstein 132
Knott 62 110 115 117
Knowlton XVIII 162
Kobayasi 120
Kohl 131
Kohlrausch 155
Konig 130
Konigsberger and Gottstein 153
Kroo 130 200
Kundt 169 170
Kundt and Roentgen 166
Kunz 160
Langevin 198
Leakage of the lines of force 27
Lecher 130
Leduc 152
Lehrer 100
Lenard 67
Lenard and Hall 67
Lenz 138
Lewis 209
Line integral of the magnetic force 47 49
Linear changes 105 118
Lines of equal declination for 1930 180
Lines of equal inclination for 1930 183
Lines of force 6 9 34
Lines of induction 34
Lines of magnetization 34
Linkage 43 125
Liquid rheostat 70 109
Lissajou’s figures 134
Lloyd 55
Lob 208
Lochner 107
Lodestone 1 2 43
Lodge 169
Loewenherz 133
Long spiral of wire 22
Longitudinal and circular fields by twisting rods with a permanent torsional set 121
Longitudinal magnetic field 147
Longitudinal magnetization due to twisting a circularly magnetized rod 120
Longitudinally magnetized 138
Lorberg 130
Lorentz 173
Lownds 148 153
Magnetic changes due to mechanical stresses 118
Magnetic characteristics 104
Magnetic Committee, National Research Council 196
Magnetic couple 14
Magnetic cycle 55
Magnetic data 209
Magnetic double refraction 172
Magnetic field 1 12
Magnetic field of an isolated pole 91 124
Magnetic field of force 1
Magnetic field strength 12
Magnetic field strength along the axis of a circular current 20
Magnetic field strength in the neighborhood of an infinitely long conductor carrying a current 19
Magnetic fields due to electric currents 17
Magnetic flux 7
Magnetic flux in the core of a toroid 49
Magnetic lines of force 10 12
Magnetic moment of a magnet 13 14 16 199 202
Magnetic poles 3 12
Magnetic potential 40
Magnetic potential difference 42
Magnetic potentiometer 79
Magnetic properties of crystal 101
Magnetic shell 36
Magnetic shielding 88
Magnetic storms 192
magnetic susceptibility 34 214
Magnetic theories and some experimental facts 196
magnetite 1
Magnetization of a cube 50
Magnetization of a cube by induction 25
Magnetized steel ball 3
Magnetized tuning fork 132
Magnetizing force 12
Magnetizing force at any point on the axis of a solenoid 22
Magneto-acoustics 132
Magneto-chemical theories 207
Magneto-electrics 137
Magneto-magnetics 1
Magneto-mechanics 104
Magneto-optics 166
Magneto-thermics 151
Magnetometer 66
Magnetometer needle 68
Magnetometric method 68
Magnetomotive force 43 44 85
Magneton 4 138 199 205 206
Magnetostriction 104 200 215
Magnitude of electromotive force 138
Magnitude of magnetic field 12
Mahajani 102
Manganese 158
Mann 40
Manometric balance 99
Mapping magnetic fields 2 64
Marrian 132
Martinique, eruption in 93
Matteucci 118 132
Maurain 132
Maxwell 8 12 20 35 38 47 118 125 196
Maxwell of flux 8
Maxwell’s line integral 47 48
McCann and Colson 105
McComb and Skinner 173
McCorkle 110
| McKeehan 101 111 122 200
McKeehan and Cioffi 106 108
Measurement of susceptibilities 93
Mechanical strains due to magnetic stresses 105
Mercadier 133
Metallurgical parlance 156
Method by weighing 95
Michel and Veyret 53
Michelson’s interferometer 112
Miller 112
Mills 168
Minor periodic variations 192
Mitchell X
Modification of sounds by magnetic fields 133
Moir 53 63 161
Molecular intensities of magnetization 33
Molecular susceptibilities 45 100
Molybdenum steel 53
Moment of a couple 14
Moment of force 14
Moment of inertia of the magnet 15
Monel metal 163
more 106
Moreau 150 153
Morris 154
Mount Wilson Solar Observatory 24
Mutual inductance 76
Nagaoka 108 110 165
Nagaoka and Honda 110 115
Nagaoka — Honda effect 121
Nature and magnitude of the forces acting on bodies in a magnetic field 84
Nernst 145
Nernst effect 151
Neutral state 60
Nichols and Williams 88
Nickel 157 169
Nikolailiev 130
Nippoldt 192 194
Non-isolation of magnetic poles 123
Non-magnetic metals 141
Non-uniform magnetic field 93
Normal induction 67 212
Normal induction curve 53 61 74
Northrup 20 125
Oersted 5 17 124
Oersted, the 46
Oersted’s discovery 17
Ohm 75
Ohm’s Law 46 75
Olshausen 130
Onnes and Perrier 159
Onnes, Perrier, and Oosterhuis 161
Oosterhuis 159
Orbital theory of atomic structure 174
Orlow 131
Owen 159
Oxley 100 101
Oxley’s observations on compounds 100
Page 132
Paget 105
Paillot 146
Para-susceptibilities 83
Paramagnetic bodies 10 158
Paramagnetic liquid 11
Paramagnetic material 10
Parson 205
Pascal 96 100 208
Pascal’s observations on compounds 100
Pascal’s work 208
Paschen 67
Pegram 131
Peltier 149
Peltier effect between magnetized and unmagnetized portions of the same substance 149
Period of a magnet freely suspended in a magnetic field 14
Perkins 65
Permalloy 53
Permanent fields 24
Permanent magnets 2 91 161
Permeability 9 10 50 213
Permeameters 67
Perminvar 53
Pfaffenberger 136
Pidgeon 115
Pierce 132
Piezo-magnetism 164
Planetesimal hypothesis of magnetism 206
Planimeter 58
Poincare 130
poisson 196
Polar sheet 36
Polarization of the medium 50
Pole strength 12
Poles of the magnet 3
Potential 42
potential energy 51
Potential gradient 42
Potential of the magnetic field 41
Poynting and Thomson 1 3 11 95 193
Preisach 136
Preston 130
PRIMROSE 101
Process of induction 25
Production of sound by magnetization 132
Pyro-magnetism 164
Quantum theory, the 201
Quincke 67 97
Quincke’s method 96
Radius of the coil 21
Rayleigh 38 167
Recalescence 156
Refraction of magnetic lines of force 87
Reluctance 44 46
Reluctivity 46 61
Remanent magnetism 52
Remsen 208
Residual magnetism 52
retentivity 52
Richardson 203
Richter 61
Richtmyer and Curtis 140
Righi 152 168
Righi — Leduc effect 151
Ring-ballistic method 74
Robin 63
Rodes 192
Rodger and Watson 166
Rossi 141
Rotary dispersion 168
Rotation of elementary magnets 202
Rowland 5 74 197
Rowland and Bell 146 208
Ruder 101
Ruhmkorff 28
Rutherford 197
Rutherford — Bohr — Sommerfeld atom 197
Sanford 53 61 79
Sanford and Fisher 105
Sanford and Kouwenhaven 105
Sano 118
Saturation 39
Schmaltz 153
Schmidt 38
Schrodinger 200
Schulze 108 201
Schuster 186 190 193
Searle 58 62
Searle and Bedford 58
Secular variations 190
Seebeck 149
Senepa 152
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