INDEX.
Reading edition
A.
Air, 11, 15, 28, 50, 136.
Air-pump, 31, 145.
Angle, 44. acute, 44. obtuse, 44. right, 44. of incidence, 45, 154, 160, 173. of reflection, 45, 154, 160, 173. visual, 168, 169, 170.
Angular velocity, 171.
Antarctic circle, 92.
Aphelion, 75.
Arctic circle, 92.
Atmosphere, 28, 104, 129, 136, 144, 150, 163. colour of, 193. reflection of, 193. refraction of, 182.
Attraction, 10, 14, 23, 25, 179. of cohesion, 15, 19, 118. capillary, 18. of gravitation, 18, 23, 29, 70, 80, 96, 116, 136.
Avenue, 170.
Auditory nerve, 151.
Axis, 78. of motion, 48. of the earth, 22, 99. of mirrors, 176. of a lens, 184.
B.
Balloon, 30.
Barometer, 140.
Bass, 155.
Bladder, 138.
Bodies, 10. elastic, 40. fall of, 23, 26, 30, 36. luminous, 157. opaque, 157. sonorous, 152, 155. transparent, 157.
Bulk, 16.
C.
Camera obscura, 184, 197, 201.
Capillary tubes, 18.
Centre, 48. of gravity, 48, 51, 52, 115. of magnitude, 48, 53. of motion, 48, 55, 115.
Centrifugal force, 49, 72, 95, 115.
Centripetal force, 49, 72.
Ceres, 84.
Circle, 44, 94.
Circumference, 94.
Clouds, 129.
Colours, 23, 185.
Comets, 86.
Compression, 42.
Concord, 155.
Constellation, 86.
Convergent rays, 175, 177.
Crystals, 12.
Curvilinear motion, 47, 72.
Cylinder, 52.
D.
Day, 78, 105, 106.
Degrees, 44, 94, 99, 169, 170. of latitude, 94, 112. of longitude, 94, 112.
Density, 16.
Diagonal, 47.
Diameter, 94.
Discords, 155.
Diurnal, 78.
Divergent rays, 175, 177.
Divisibility, 10, 12.
E.
Earth, 18, 70, 84, 88, 95.
Echo, 154.
Eclipse, 110, 159.
Ecliptic, 86, 92, 99.
Elasticity, 41.
Elastic bodies, 28, 40. fluids, 28, 41, 118, 136.
Ellipsis, 75.
Equinox, 100, 107. precession of, 107.
Equator, 92, 99.
Essential properties, 10.
Exhalations, 13.
Extension, 10, 11.
Eye, 166, 195.
F.
Fall of bodies, 24, 27, 31.
Figure, 10, 12.
Fluids, 118, 128. elastic, 28, 41, 118, 136. equilibrium of, 120, 122, 132. non-elastic, 119. pressure of, 121.
Flying, 40.
Focus, 176. of concave mirrors, 177. of convex mirrors, 175, 177. of a lens, 184. imaginary, 176. virtual, 176.
Force, 33. centrifugal, 49, 72, 95, 115. centripetal, 49, 72. projectile, 47, 49. of gravity, 47, 49.
Fountains, 135.
Friction, 68, 69, 135.
Frigid zone, 93.
Fulcrum, 54.
G.
General properties of bodies, 10.
Georgium Sidus, 85.
Glass, 183. burning, 188. refraction of, 183.
Gold, 119, 126.
Gravity, 18, 23, 78, 97.
H.
Harmony, 155.
Heat, 16, 29, 103.
Hemisphere, 92, 100.
Herschel, 85.
Hydraulics, 118.
Hydrometer, 128.
Hydrostatics, 118.
I.
Image on the retina, 165, 172. reversed, 167. in plain mirror, 172. in concave do. 175. in convex do. 175.
Impenetrability, 10.
Inclined plane, 54, 66.
Inertia, 10, 14, 32.
Inherent properties, 10.
Juno, 84.
Jupiter, 85.
L.
Lake, 133, 135.
Latitude, 94, 112.
Lens, 184. concave, 184. convex, 184. meniscus, 184. plano-concave, 184. plano-convex, 184.
Lever, 54, 55. first kind, 58. second kind, 60. third kind, 60.
Light, 157. pencil of, 158. of the moon, 162, 163. absorption of, 188. reflected, 160. refraction of, 179.
Liquids, 118.
Longitude, 94, 112.
Luminous bodies, 157.
Lunar month, 108. eclipse, 110.
M.
Machine, 54, 66.
Magic lanthorn, 203.
Mars, 84.
Matter, 10, 13.
Mechanics, 32.
Mediums, 157, 180.
Melody, 156.
Mercury, (planet) 83, 85, 114.
Mercury, or quicksilver, 16, 140, 141.
Meridians, 93.
Microscope, 200. single, 200. double, 200. solar, 202, 203.
Minerals, 12.
Minutes, 94.
Momentum, 38, 56.
Monsoons, 149.
Month, lunar, 108.
Moon, 78, 79, 80, 82, 85.
Moonlight, 162, 163.
Motion, 14, 32, 36. accelerated, 36. axis of, 48. centre of, 48, 55. compound, 46. curvilinear, 47, 49. diurnal, 78. perpetual, 35. retarded, 35. reflected, 43. uniform, 34.
Mirrors, 172. axis of, 176. burning, 177. concave, 174, 176, 209. convex, 174, 175. plane or flat, 172. reflection of, 173.
N.
Neap tides, 116.
Nerves, 166. auditory, 151, 166. olfactory, 166. optic, 164, 166.
Night, 78.
Nodes, 110.
O.
Octave, 156.
Odour, 13.
Opaque bodies, 157, 158.
Optics, 157.
Orbit, 86.
P.
Pallas, 84.
Parabola, 51.
Parallel lines, 25.
Parallel of latitude, 94.
Pellucid bodies, 157.
Pencil of rays, 158.
Pendulum, 98.
Perihelion, 75.
Perpendicular lines, 25.
Phases, 109.
Piston, 143, 145.
Plane, 92, 93.
Planets, 76, 81, 83.
Poles, 92, 99, 100.
Polar star, 100, 112.
Porosity, 42, 126.
Powers, mechanical, 54.
Projection, 49, 50, 71.
Precession of equinoxes, 107.
Pulley, 54, 63.
Pump, 31. sucking and lifting, 143. forcing, 144, 145. air, 31, 145.
Pupil of the eye, 164.
R.
Rain, 17, 129.
Rainbow, 188.
Rarity, 16.
Ray of light, 158, 179. reflected, 160, 161. incident, 161.
Rays, intersecting, 165.
Reaction, 39.
Receiver, 31.
Reflection of light, 160, 163. angle of, 45, 161, 173. of mirrors, 173. of plane mirrors, 174. of concave do. 174. of convex do. 174.
Reflected motion, 43.
Refraction, 179, 186. of the atmosphere, 182. of glass, 183. of a lens, 184. of a prism, 185.
Resistance, 54.
Retina, 165. image on, 166.
Rivers, 134.
Rivulets, 131.
S.
Satellites, 80, 111, 113.
Saturn, 85.
Scales, or balance, 55.
Screw, 54, 67.
Shadow, 110, 111.
Siderial time, 106.
Sight, 165.
Signs of the zodiac, 86, 93.
Smoke, 14, 29.
Solar microscope, 202.
Solstice, 100, 102.
Sound, 151. acute, 155. musical, 155.
Space, 33.
Specific gravity, 123. of air, 140.
Spectrum, 190.
Speaking-trumpet, 154.
Sphere, 26.
Springs, 130.
Spring tides, 116.
Square, 81, 85.
Stars, 77, 86, 102.
Storms, 147.
Substance, 10.
Summer, 76, 100.
Sun, 71, 75, 78, 162, 182.
Swimming, 41.
Syphon, 132.
T.
Tangent, 49, 73.
Telescope, 203, 204. reflecting, 204. refracting, 204.
Temperate zone, 92, 101.
Thermometer, 142.
Tides, 114, 116. neap, 116. spring, 116. ærial, 150.
Time, 105, 107. siderial, 107. equal, 107. solar, 107.
Tone, 155.
Torrid zone, 93, 147, 182.
Transit, 114.
Transparent bodies, 157.
Treble and bass, 155.
Tropics, 92.
V.
Valve, 143.
Vapour, 17, 29, 104, 129.
Velocity, 33, 57.
Venus, 84.
Vesta, 84.
Vibration, 98, 152.
Vision, 164, 168.
Vision, angle of, 168, 170. double, 171.
U.
Undulation, 153.
Unison, 155.
W.
Water, 118, 130. spring, 130. rain, 130. level of, 120.
Wedge, 54, 66.
Weight, 23.
Wheel and axle, 54, 65.
Wind, 146. trade, 147. periodical, 148.
Winter, 76, 101.
Y.
Year, 107. siderial, 107. solar, 107.
Z.
Zodiac, 86.
Zone, 93. torrid, 93, 147, 182. temperate, 93, 101. frigid, 93, 100.
THE END.
TO ALL TEACHERS.