INDEX 



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 recog- 

 nition of, 51, 100; time's arrow, 

 69; infinity of, 83; summary of 

 conclusions, 101 ; time-triangies, 

 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 



