Newton's constant of gravitation 131 law of gravitation 48, 80, 106, 124 law of motion 64
Non-Euclidean geometry 108
Non-Galileian reference-bodies 98
Non-uniform motion 62
Optics 13, 19, 44
Organ-pipe, note of 14
Parabola 9, 10
Path-curve 10
Perihelion of Mercury 124-126
Physics 7 of measurement 7
Place specification 5, 6
Poincare@Poincaré#Poincaré 108
Point 1
Point-mass, energy of#Point-mass 45
Position 9
Principle of relativity 13-15, 19, 20, 60
Processes of Nature 42
Propagation of light 17, 19, 20, 32, 91, 119 in liquid 40 in gravitational fields 75
Quasi-Euclidean universe 114
Quasi-spherical universe 114
Radiation 46
Radioactive substances 50
Reference-mollusk 99-101
Relative position 3 velocity 117
Rest 14
Riemann 86, 108, 111