CHAPTER II.
CHOICE OF THREE FUNDAMENTAL UNITS,
16-20
Three independent units, $ 15. Their selection, $ 16.
Standards of mass, 17. Standards of length, § 18.
Standard of time, $ 19. N ssity for one common scale,
§ 20. The C.G.S. system, $ 21. Powers of 1o as factors,
§ 22.
CHAPTER III.
MECHANICAL UNITS, ·
21 -29
Acceleration; value of g; seconds' pendulum, § 23.
Force; the dyne; gravitation measure of force, SS 24-26.
The poundal, § 27. Work and energy; the erg, § 28.
Kinetic energy, 29.
Gravitation-measure of work, S 30.
Rate of working ; horse-power, $ 31. Examples in dyna-
mics, p. 25. Centrifugal force, $ 32. Examples on centri-
fugal force, p. 27.
HYDROSTATICS,
30—43
Relative density of water at various temperatures, §
33. Absolute density of water, § 34. Formulæ for ex-
pansion of water, $ 35. Table of densities of solids and
liquids, S 36. Volume by weighing in water, § 37.
Examples in hydrostatics, p. 33.
Barometric pressure ;
C.G.S. unit of pressure ; standard atmosphere adopted in
this volume, S 38. Examples on barometric pressure, p.
35. Density of dry air, with example, S 39. Absolute
densities of gases, $ 40. Pressure-height at a point in the air (height of homogeneous atmosphere) SS 41, 42. Exam- ples on pressure-height, p. 39. Variation of density with height in the atmosphere, § 43. Examples on height at which density is halved, p. 41.
Pressure of aqueous vapour, S 44. Pressures of various vapours, $ 45. Super- ficial tensions of liquids, $ 46. Correction of barometer for capillarity, S 46 A.
STRAIN, STRESS, AND RESILIENCE,
44-56
Strain, SS 47-49. Stress, SS 50, 51. Coefficients of
resilience, $ 52. Resilience of volume; Young's modulus; simple rigidity, S 53. Shear, SS 54-58. Shearing stress, SS 59-60. Resistance to shearing, 61. Resilience of volume of liquids, SS 62, 63. Resilience of solids, SS 64-69.
LIGHT, .
67–77
Velocity, $ 85. Wave-lengths, $ 86. Index of refrac.
tion of air, $ 87. Vibrations per second, § 88. Indices of refraction; glass, $ 89. Liquids, SS 90, 91. Indices of double refraction, S 92. Indices of refraction of miscel- laneous substances, § 93. Gases, § 94. Dispersion in gases, SS 95, 96.
HEAT,
78--119
Unit of heat, $$ 97-99. Capacity and specific heat, $s
98-102. Table of specific heats and atomic weights of
elements, $ 103. Variation of specific heat with tempera-
ture, $ 104. Specific heats in solid and liquid form, $ 105.
Specific heats of gases, $8 106, 107. Of vapours, $ 108.
Melting points, $ 109. Change of volume from liquid to
vapour, $ 110. Latent heats of fluidity, and melting points,
§ III. Latent heats of vaporization, $ 112. Latent and
total heat of steam, § 113. Effect of temperature on
gases, $ 114. Boiling points of water, $ 115. Departures
from Boyle's law, § 116. Specific heats of the same
substances in different states, § 117. Boiling points of
various liquids, $ 118. Change of volume in melting, $ 119.
Dry-bulb, wet-bulb, and dew-point, $ 120.
Conductivity; definition, $ 121. Dimensions, § 122.
k Thermometric conductivity, § 123. Analogous to co- efficient of diffusion, $$ 124, 125. Coefficients of diffusion
of certain gases, § 126. Conductivity of air, $ 127. Results
of experiments on conductivity of solids, $$ 128-135.
J. D. Forbes, $ 128. Neumann, $ 129. Results from
underground thermometers, $ 130. Angström, $ 131. G.
Forbes, $ 132. A. S. Herschel and Lebour, $ 133. Péclet
$S 134, 135.
Emission and surface-conduction, M'Farlane, & 136.
Tait, $ 137
Mechanical equivalent of heat, $$ 138, 139.
Heat and energy of combination, $ 140.
Two specific heats of a gas, $ 141. Change of freezing- point with pressure, ş 142. Change of temperature pro- duced by adiabatic compression, § 143. Resilience as affected by heat of compression, with examples, § 144. Tables of expansions, $ 145.
MAGNETISM,
120-127
Magnetic units and their dimensions, $3 146-150.
Examples, pp. 122-125. Gauss's pound magnet, p. 122.
Maximum of permanent magnetism, p. 123. Maximum magnetization of iron, nickel, and cobalt, p. 123. Moment and magnetization of earth, p. 124. Different units em- ployed by Gauss, p. 125. Distribution of magnetic potential and force over surface of earth, $ 151. Magnetic ele- ments at Greenwich, $S 152, 152*. Magneto-optic rota- tions, $ 153
light, $ 169. Dimensions in terms of density, length, and
time, $ 170.
Specific inductive capacity, § 171. Of gases, 172.
Ohm, theoretical and practical, $ 173. Volt, Weber, and Farad, § 174. Earth-quadrant per second, $ 175.
Length of spark for various differences of potential, $$ 176, 177
Resistance, and specific resistance, ş 178. Tables of specific resistance, $$ 179, 180, Resistance of insulators, S 181. Resistance of water and ice at various tempera- tures, $ 182,
Electro-motive forces of various cells, $ 183. Electro-
motive forces of contact, § 184. Thermoelectric force,
with examples, $ 185, 186. Electro-chemical equivalents,
§ 187. Computation of electromotive force from heat
of combination, 188. Examples on electricity, $ 189,
pp. 155-158. Capacity of earth, p. 156. Electromotive
force due to revolving coil, p. 158. Problem on selection of
fundamental units, $ 190.
Electrodynamics. Ampère's formula, with example,
§ 191.
« ForrigeFortsett » |