Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained

by Mrs. Marcet; Thomas P. Jones

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].