The Connection of the Physical SciencesKey and Biddle, 1834 - 356 pages |
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Page 15
... mean distance of a planet from the sun is equal to half the major axis of its orbit : if , therefore , the planet described a circle round the sun at its mean distance , the motion would be uniform , and the periodic time unaltered ...
... mean distance of a planet from the sun is equal to half the major axis of its orbit : if , therefore , the planet described a circle round the sun at its mean distance , the motion would be uniform , and the periodic time unaltered ...
Page 16
... mean motion . The orbits of the planets have a very small inclination to the plane of the ecliptic in which the earth moves ; and , on that account , astronomers refer their motions to this plane at a given epoch as a known and fixed ...
... mean motion . The orbits of the planets have a very small inclination to the plane of the ecliptic in which the earth moves ; and , on that account , astronomers refer their motions to this plane at a given epoch as a known and fixed ...
Page 18
Mary Somerville. its tropical motion , or to ... mean distances of the planets from the sun , that one cannot vary without affect- ing the other . With the exception of these two elements , it appears that all the bodies are in motion ...
Mary Somerville. its tropical motion , or to ... mean distances of the planets from the sun , that one cannot vary without affect- ing the other . With the exception of these two elements , it appears that all the bodies are in motion ...
Page 23
... mean motions of Jupiter and Saturn have been affected by a great inequality of a very long period , forming an apparent anomaly in the theory of the planets . It was long known by observation that five times the mean motion of Saturn is ...
... mean motions of Jupiter and Saturn have been affected by a great inequality of a very long period , forming an apparent anomaly in the theory of the planets . It was long known by observation that five times the mean motion of Saturn is ...
Page 26
... mean motions and mean longitudes of the three first satellites . It appears from observation that the mean motion of the first satellite , plus twice that of the third , is equal to three times that of the second ; and that the mean ...
... mean motions and mean longitudes of the three first satellites . It appears from observation that the mean motion of the first satellite , plus twice that of the third , is equal to three times that of the second ; and that the mean ...
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Common terms and phrases
action appears astronomers atmosphere attraction caloric cause celestial bodies centre centrifugal force chemical decomposition colors comet compression consequently degree density diameter diminishes direction disturbing earth ecliptic effect electric currents equal equator equilibrium equinox ether extremely fluid force galvanometer glass globe gravitation heat Herschel increase inequalities intensity Jupiter Key & Biddle latent heat latitude length liquid longitude lunar magnetic major axis mass mean motion meridian miles moon nearly needle nodes nutation observed ocean opposite optic axis orbit oscillations parallax particles passing perigee perihelion period perpendicular phenomena plane plate poles position produce proved quantity ray of light reflected refraction retrograde motion revolution revolve right angles rings rotation satellites sensible Sir Edward Parry solar sound space spheroid substances sun and moon sun's surface temperature terrestrial theory tides tion tourmaline transmitted tricity undulations variation velocity vibrations voltaic waves whence wire
Popular passages
Page 20 - That day, as other solemn days, they spent In song and dance about the sacred hill; Mystical dance, which yonder starry sphere Of planets, and of fixed, in all her wheels Resembles nearest, mazes intricate, Eccentrick, intervolved, yet regular Then most, when most irregular they seem ; And in their motions harmony divine So smooths her charming tones, that God's own ear Listens delighted.
Page 316 - 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 10 - Kepler also deduced from observation, that the squares of the periodic times of the planets, or the times of their revolutions round the sun, are proportional to the cubes of their mean distances from...
Page 28 - His true position is in the diagonal of the parallelogram, whose sides are in the ratio of the velocity of light to the velocity of the earth in its orbit, which is as 190000 to 19.
Page 298 - Jupiter ; it then gradually diminished in splendour, and, having exhibited all the variety of tints that indicate the changes of combustion, vanished sixteen months after its discovery, without altering its position. It is impossible to imagine anything more tremendous than a conflagration that could be visible at such a distance.
Page 296 - The distance of the fixed stars is too great to admit of their exhibiting a sensible disc ; but, in all probability, they are spherical, and must certainly be so if gravitation pervades all space, which it may be presumed to do, since Sir John Herschel has shown that it extends to the binary systems of stars.
Page 318 - These formulae, emblematic of Omniscience, condense into a few symbols the immutable laws of the universe. This mighty instrument of human power itself originates in the primitive constitution of the human mind, and rests upon a few fundamental axioms, which have eternally existed in Him who implanted them in the breast of man when He created him after His own image.