366
INDEX.
- of magnetism, 93. Universality of, 329. Effects of, 330. Activity of, 331. Equilibrium of, 332. Productive of chemical decomposition, 338.
- Encké, professor, his prediction of the return of the comet so many times in succession, 156.
- Englefield, sir H., his analysis of a solar beam, 314.
- Equilibrium maintained by force, 222.
- Erman, professor, his opinion of the effects of the voltaic circuit, 340.
- Euler, his improvement on Newton's theory of sound, 247.
- Experience, source of our knowledge of nature's laws, 76.
- Facts, the observation of, 118.
- Faujas de St. Fond, imaginary craters of, 131.
- Fluids, laws of the motion of, 181. Compressibility of, 225. Consideration of the motions of, more complicated than that of equilibrium, 235.
- Fourier, baron, his opinion that the celestial regions have a temperature, independent of the sun, not greatly inferior to that at which quicksilver congeals, 157. His analysis of the laws of conduction and radiation of heat, 317.
- Franklin, Dr., his experiments on electricity, 332.
- Fresnel, M., his mathematical explanation of the phenomena of double refraction, 32. His improvement on lenses for lamps of lighthouses, 56. His opinions on the nature of light, 207. His experiments on the interference of polarized light, 261. His theory of polarization, 262.
- Friction, a source of heat, 313.
- Galileo, celebrity of, for his knowledge of science, 72. His exposition of the Aristotelian philosophy, 110. His refutation of Aristotle's dogmas respecting motion, his persecution in consequence of it, 113. His knowledge of the accelerating power of gravity, 168. His knowledge of the weight of the atmosphere, 228.
- Gay-Lussac, his examination of gases and vapours, 319.
- Geometry, axioms of, an appeal to experience, not corporeal, but mental, 95.
