The Connection of the Physical SciencesKey and Biddle, 1834 - 356 pages |
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Page 20
... angle of about 23 ° 27 ′ 34 ′′ .5 , will never coincide with the plane of the ecliptic so there never can be perpetual spring . The rotation of the earth is uniform ; therefore day and night , summer and winter , will continue their ...
... angle of about 23 ° 27 ′ 34 ′′ .5 , will never coincide with the plane of the ecliptic so there never can be perpetual spring . The rotation of the earth is uniform ; therefore day and night , summer and winter , will continue their ...
Page 21
... angle of nearly 1 ° 35 ′ 31 ′′ , and that , in passing through the sun , and about midway between the orbits of Jupiter and Saturn , it may be re- garded as the equator of the solar system , dividing it into two parts , which balance ...
... angle of nearly 1 ° 35 ′ 31 ′′ , and that , in passing through the sun , and about midway between the orbits of Jupiter and Saturn , it may be re- garded as the equator of the solar system , dividing it into two parts , which balance ...
Page 26
... angles . It is proved by theory , that if these relations had only been approximate when the satellites were first launched into space , their mutual attractions would have established and maintained them , notwithstanding the secular ...
... angles . It is proved by theory , that if these relations had only been approximate when the satellites were first launched into space , their mutual attractions would have established and maintained them , notwithstanding the secular ...
Page 29
... angle contained between the axis of the telescope and a line drawn to the true place of the star , is its aberration , which varies in quantity and direction in different parts of the earth's orbit ; but as it is only 20 " 37 , or 20'5 ...
... angle contained between the axis of the telescope and a line drawn to the true place of the star , is its aberration , which varies in quantity and direction in different parts of the earth's orbit ; but as it is only 20 " 37 , or 20'5 ...
Page 37
... angle of 1918 " .1 ; and that of the earth would appear under an angle of 6908 " .3 ; so that the length of the shadow is at least three times and a half greater than the distance of the moon from the earth , and the breadth of the ...
... angle of 1918 " .1 ; and that of the earth would appear under an angle of 6908 " .3 ; so that the length of the shadow is at least three times and a half greater than the distance of the moon from the earth , and the breadth of the ...
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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.