Statistical laws, 244; mind’s interference with, 313 Statistics, 201, 300, 303 Stratification, 47 Stress, 129, 155, 262 Structure, 234, 277 Sub-aether, 211, 219 Subjective element in physics, 95, 241 Substance, ix, 273, 318 Success, physical basis of, 346 Sun, as a star, 164; age of, 169 Supernatural, 309, 348 Survey from within, 145, 321, 330 Sweepstake theory, 189 [Pg 361] Symbolism in science, xiii, 209, 247, 269, 324 Synthetic method of physics, 249 Temperature, 71 Temporal relations, 50 Tensor, 257 Tensor calculus, 181 Thermodynamical equilibrium, 77 Thermodynamics, second law of, 66, 74, 86 Thermometer as entropy-clock, 99, 101 Thinking machine, 259 Thought, 258; laws of, 345 Time in physics, 36; time lived (proper-time), 40; dual recognition of, 51, 100; time’s arrow, 69; infinity of, 83; summary of conclusions, 101; time-triangles, 133; reality of, 275 Time-scale in astronomy, 167 Touch, sense of, 273 Track, longest, 125, 135, 148 Trade Union of matter, 126 Transcendental laws, 245 Traveller, time lived by, 39, 126, 135 Triangles in space and time, 133 Tug of gravitation, 115, 122 Undoing, 65 Unhappening, 94, 108 Uniformity, basis of, 145 Unknowable entities, 221, 308 Utopia, 265 Values, 243, 330 Vegetation on Mars, 173 Velocity, relativity of, 10; upper limit to, 56 Velocity through aether, 30, 32 Velocity of light, 46, 54 Venus, 170 Victorian physicist, ideals of, 209, 259 View-point, 92, 283 Void, 13, 137 Volition, 310 Watertight compartments, 194 Wave-group, 213, 217, 225 Wave-length, measurement of, 24 Wave-mechanics, 211 Wave-theory of matter, 202 Wavicle, 201 Wells, H. G., 67 White dwarfs, 203 Whitehead, A. N., 145, 249 Whittaker, E. T., 181 Winding up of universe, 83 World building, 230 World-lines, 253 Worm, four-dimensional, 42, 87, 92 Wright, W. H., 172 Wrong frames of reference, 116 X (Mr.), 262, 268 TRANSCRIBER’S NOTES On page 32, the reference to Einstein has been replaced by Dickens as shown in the Index. This quote appears in “Martin Chuzzlewit” published in 1843.