Opening the text
The electron, its isolation and measurement and the determination of some of its properties — John Stuart Mill — John Shaqi
The electron, its isolation and measurement and the determination of some of its properties

John Stuart Mill · en
66; early views of, 6 f.; Franklin’s

theory of, 14, 20, 24;

growth of theories of, 10 f.; ion

of, 28; and light, 232; and matter,

186; proof of atomic

nature of, 66, 131; structure

of, 3, 4; two-fluid theory, 13

Electrolysis, 27, 28, 43

Electrolytic laws, 25

Electromagnetic theory of mass,

20, 183, 187; conflict with, 212

Electron, 4, 26, 77, 261; basis of

all static charges, 72; early

values of, 27-63; energy of,

239, 250, 282; mass of, 27; origin

of the word, 23; positive

and negative equal, 82, 83,

182, 208; radius of, 183 f.,

188; speed of, 191; theory of,

11, 21, 24

Electronic energy, 245

Electronic orbits of atoms, 221,

222

Electrons: emission of, 233, 236;

number of, in atom, 193; number

of free positive, in nucleus,

277, 281

Elements, with atomic numbers

and weights, and chemical positions,

286

: for cathode rays, 42; value of,

in electrolysis, 27, 30; value of,

in exhausted tubes, 43; for

negative and positive ions, 43;

Bucherer’s value of, 214

Emission energy of electron, 236,

250 f.; explosive, 253; from light,

251

Epstein theory of orbit, 219, 220

Ether, 16, 26; theory, 232, 235

Ether-stress theory, 17 f.; objections

to, 248

Ether-string theory, Thomson’s,

236, 237, 248, 249

Faraday constant, 120

Faraday’s laws, 15, 19, 22, 25

Faraday lines, 237

Faraday-Maxwell theory, 17

Franklin theory, 20

Gamma rays, 232, 232

Gaseous conduction, nature of, 32

Gases: electrical properties of, 46;

ionization of, 123; gases, quantitative

measurements in, 147

Gram molecule, volume of in

gases, 30, 31

Grating: molecular, 197; spacing,

261

Greek philosophy, 1, 2, 9 f., 232

, value of, 117, 212, 213, 242,

245, 261

[Pg 292]

Hipp chronoscope, 74

“Hot spark,” 143, 220

Ion, 28, 29; diffusion coefficient of,

36, 262; gaseous and electrolytic,

34; isolation of, 67; mobility

of, 35, 36 f., 39, 262;

positive and negative, 38, 48;

univalent, in electrolysis, 34, 39

Ionic charge, 29, 39, 45, 47, 176;

elementary, 76; mobility, 264

Ionization: by  rays, 139 f., 144;

by -rays, 138, 144; by ether

waves, 134, 144; gaseous and

electrolytic, 39; mechanism of

gaseous, 125; oil-drop experiments

in, 127, 141; by X-rays

and radium rays, 125, 134

Kinetic energy: of atom, 194, 273;

of light, 239; of translation of

molecule, 261

Kinetic theory, 8, 31, 49, 157;

of gases, 145, 268

Lenard’s trigger theory, 251

Light-quantas, 244, 256

Mass, electrical theory of, 185,

188; of hydrogen atom, 261;

variation of with speed, 188

Mass of charge on sphere of

radius , 272

Maxwell-Boltzmann law, 81

Maxwell distribution law, 151,

275 f.; theory, 24

Mean free path of a gas molecule,

8, 183, 275

Mean free path of a negative electron,

191

Measurements, exact, 58, 65

Molecular cross-section, 275

Molecule: diameter of, 215; of

gas, 261; kinetic energy of