INDEX
Reading edition
Absorption of light, 148
Æther, the, 24
Æther waves, 96, 131, 133, 137, 146, 148, 163
Alpha rays from radium, 190
Alternating electric current, 121
Amber electrified, 32, 34 to 37, 201
Artificial light, 140, 142
Atoms breaking up, 188, 190
Atoms co-operating with electrons, 108, 123
Atom's internal energy, 187, 191
Atoms of matter, 52, 54, 78, 128, 180, 184
Attraction between atoms, 180
Attraction, electrical, 35, 202
Attraction, magnetic, 78, 205
Aurora, 132
Automatic telegraph transmitter, 91
Battery, electric, 70, 203
Beginning of the world, 53
Beta rays from radium, 189
Birth of the moon, 52, 54
Bricks of the universe, 180, 195
Chemical affinity, 206
Chemical combinations, 56, 182
Chemistry of the stars, 52, 55, 144, 153
Chlorine atoms, 56, 182
Cloud formation, 56
Circuit, earth, 72
Coherer, tube, 98
Cohesive force, 183
Colour, 136
Compass needle, 77
Complete electric circuit, 71
Conductors, 37, 68
Connecting link between æther and matter, 118, 127
Corpuscles, 66
Crookes, Sir William, 205
Current of electricity, 68
Dark lines in spectrum, 154
Detachable electrons, 78, 181
Detecting imitation diamonds, 174
Direct electric current, 121
Discharge of electricity, 42
Discharge through a vacuum, 60
Discovery of electrons, 160, 206
Discovery of X-rays, 169
Dynamo, 116, 118
Earth circuit, 72
Electrical discharge, 42
Electricity, positive, 23, 32, 39, 52, 180
Electricity, negative, 23, 32, 39
Electric battery, 70
Electric current, 68, 70
Electric motor, 116, 122
Electric shock, 47
Electrified objects, 37, 38, 201
Electro-magnets, 76, 81, 83, 118, 205
Electrodes, 61
Electrocution, 49
Electron as a go-between, 118
Electron, derivation of the word, 23
Electron, discovery of, 160, 206
Electrons, 25, 32, 66, 78, 138, 162, 195
Energy transmission through the æther, 73, 121
Energy within the atom, 187, 191
Field, magnetic, 68, 76, 118
Fluorescent screen, 169, 206
Galvani's discovery, 202
Gamma rays from radium, 189
Gilbert's discovery, 201
Glass, electrified, 37, 38
Glass prism, 147, 152
Glow-lamp, electric, 140, 141
Glow-worm, 142
Heat, radiant, 126, 131, 133, 142
Helium atoms, 188, 190
Hydrogen atoms, 55, 182
Insulators (non-conductors), 37, 47
Iron atoms, 77
Iron wires discarded, 88
Lamp, electric, 140
Leyden jar, 42, 202
Light, 23, 60, 64, 133
Light absorbed, 148
Light, artificial, 140, 142
Light, reflected, 148
Lightning, 42, 48
Lines in the spectrum, 152, 154, 160, 162
Lorentz's declaration, 206
Magnetic attraction, 78, 205
Magnetic field, 68, 76, 118
Magnetic repulsion, 205
Magnetism, 73, 76, 203, 204
Magnetism and electricity, 73
Magnets, electro-, 76, 81, 83, 205
Magnets, permanent, 83
Mariner's compass, 77
Matter, 52, 54
Metal electrified, 37, 38
Molecules of matter, 181, 183
Moon's birth, 52, 54
Morse telegraph, 88
Motion in line of sight, 162
Motor, electric, 116, 122
Negative electricity, 23, 32, 39
Oersted's discovery, 204
Oxygen atoms, 182
Permanent magnets, 82
Positive electricity, 23, 32, 39, 52, 180
Prism of glass, 147, 152
Radiant heat, 131, 133, 142
Radiant matter, 63, 205
Radium, 188
Rainbow, 147
Rays from radium, 189, 190
Reflection of light, 148
Repulsion, electrical, 202
Repulsion, magnetic, 205
Roentgen rays, 167
Roentgen's discovery, 168, 206
Sea, cause of saltness, 56
Shock, electric, 47
Silk, electrified, 38
Sodium atoms, 56, 182
Spark, electric, 44
Spectroscope, 152, 154, 207
Spectrum, 144, 147, 152, 154
Speed of electrons in conductor, 70
Stars approaching the earth, 162
Stars, constituents of the, 52, 55, 146
Stoney, Dr. Johnstone, 206
Sun, constituents of the, 154
Sun's heat, 128, 131
Telegraph signals, 90
Telegraphy, wireless, 95
Telephone, 109
Telephony, wireless, 110
Temperature, 180
Tramway, electric, 117, 118, 122
Transparent substances, 149
Vacuum tubes, 60, 61, 132, 205
Velocity of electrons, 70
Volta's discovery, 203
Waves in the æther, 96, 133, 137, 146, 148, 163
Wireless messages from the stars, 162
Wireless telegraphy, 95
Wireless telephony, 110
X-rays, 166, 206
X-rays from radium, 189
X-ray photography, 173
Zeeman proves existence of electrons, 161, 206
Printed by Ballantyne, Hanson & Co. Edinburgh & London