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action appears atmosphere attraction bodies caloric cause centrifugal force chemical color comet consequently copper crystal degree density diameter diminishes direction distance disturbing earth ecliptic effect electric currents electricity equal equator ether extremely Fahrenheit fluid force galvanometer glass globe gravitation greater heat hemisphere increase intensity Jupiter latitude length less light liquid longitude luminous lunar magnetic major axis mass mean meridian metal miles moon motion move nearly needle nodal lines nodes NOTE nutation observations optic axis orbit oscillations parallax particles passing perigee perihelion period phenomena planet plate polarized poles position produce quantity rays reflected refraction refrangible retrograde motion revolution revolving right angles rings rotation satellites secular Sir John Herschel Sir William Herschel solar spectrum sound space square stars substances sun's surface temperature terrestrial tion tourmaline transmitted tricity undulations Uranus variation varies velocity vibrations Voltaic waves wire
Page 392 - Bacon, that the words of prophecy are to be interpreted as the words of one 'with whom a thousand years are as one day, and one day as a thousand years.
Page 25 - But, in the midst of all these vicissitudes, the length of the major axis and the mean motions of the planets remain permanently independent of secular changes. They are so connected by Kepler's law, of the squares of the periodic times being proportional to the cubes of the mean distances of the planets from the sun, that one cannot vary without affecting the other.
Page 372 - Post 8vo. Price 9s. cloth. Results of Astronomical Observations Made at the Cape of Good Hope. By Sir John Herschel. 4to, with Plates. Price 4/.
Page 237 - That this heat possesses a peculiar chemical quality which is not possessed by the purely calorific rays outside of the visible spectrum, though far more intense; and, 3dly. That the heat radiated from obscurely hot iron, abounds especially in rays analogous to those of the region of the spectrum above indicated.
Page 7 - is to inspire the love of truth, of wisdom, of beauty — especially of goodness, the highest beauty — and of that supreme and eternal Mind, which contains all truth and wisdom, all beauty and goodness. By the love or delightful contemplation and pursuit of these transcendent aims, for their own sake only, the mind of man is raised from low and perishable objects, and prepared for those high destinies which are appointed for all those who are capable of them.
Page 292 - ... were distinctly visible. Day broke very slowly, and the sun rose of a fiery and threatening aspect. Rain followed. Captain Bonnycastle caused a bucket of this fiery water to be drawn up ; it was one mass of light when stirred by the hand, and not in sparks as usual, but in actual coruscations.
Page 386 - ... whence it has been supposed that meteorites have been projected from the moon by the impetus of volcanic eruption. It has even been computed, that if a stone were projected from the moon in a vertical line, with an initial velocity of 10,992 feet in a second, — more than four times the...
Page 386 - ... earth's attraction, and revolve about it like a satellite. These bodies, impelled either by the direction of the primitive impulse, or by the disturbing action of the sun, might ultimately penetrate the earth's atmosphere, and arrive at its surface ; but it is much more probable that they are...