INDEX.
Reading edition
Acceleration, 73, 77
Almagest, 53
Anchor escapement, 120
Ancient science, 50
Aristotle’s ideas, 23, 52
Attwood’s machine, 83
Babylon, temple of, 24
Balance wheel, 159
Candles to measure time, 46
Chaldean day, 15
Chaucer, 56
Chronographs, 179
Chronometer, 165
Chronometer escapement, 166
Clock movement, 123
Copernicus, 56
Crossbow experiment, 183
Crown wheel, 115
Cycloid, the, 109
Dante’s Inferno, 54
Day, length of, 29
Dead beat escapement, 135
Density, 12
Driving weight, 127, 141
Earth, a sphere, 21
Earth’s motion, 57, 69
Earth not at rest, 67
Egg-boiler, 43
Electric clocks, 179
Epicycloidal wheels, 191
Escapements, anchor, 120
crown, 115
chronometer, 166
dead beat, 135
gravity, 169
Falling bodies, laws of, 62
Force, 76
Forces, revolution of, 89
Fusee, the, 117
Galileo’s “Dialogues,” 58
clock, 111
Grandfather’s clock, 119
Gravity, action of, 13, 65
Gravity escapement, 169
Greek day, 16
Harmonic motion, 97
Hooke’s law, 71
Isochronism of springs, 93
Lamps to measure time, 46
Latitude and longitude, 161
finding, 163
Mass, nature of, 10
Mercury clock, 45
Modern methods, 177, 197
Moments, 101
Moon’s appearance, 17
Motion, reliability of, 57
Musical notes, 95
North pole, days at, 33
Oscillations, law of, 151
Parabola, the, 87
Pendulum, the, 103, 145
suspension, 145
mercury, 147
gridiron, 149
theory of, 155
free, 133
Pisa, leaning tower of, 61
Planets, names of, 11
Pulse measurer, 99
Ratchet wheels, 129
Roman clocks, 40
Sand-glasses, 41
Space, nature of, 8
Speed of falling bodies, 79
Spring balance, 107
Stevinus’ theory, 81
Style of sun-dials, 35
Sun-dials, 27
to make, 48
Synchronous clocks, 175
Time, 13
Toothed wheels, 125, 137
Tuning fork, 94, 181
Velocities, composition of, 85
Water pressure, 37
Water clocks, 39
Watches, 156
Week days, names of, 24
Wheels, shape of teeth, 190
Wheel-cutting machines, 193
Winding drum, 131
Winter sun, 31
Zodiac, 18
BRADBURY, AGNEW, & CO. LD., PRINTERS, LONDON AND TONBRIDGE.