On the Connexion of the Physical SciencesJ. Murray, 1858 - 523 pages |
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Page 23
... angle * of 23 ° 27 ′ 28 ′′ -29 , will never coincide with the plane of the ecliptic : so there never can be perpetual spring ( N. 79 ) . The rotation of the earth is uniform ; therefore day and night , summer and winter , will continue ...
... angle * of 23 ° 27 ′ 28 ′′ -29 , will never coincide with the plane of the ecliptic : so there never can be perpetual spring ( N. 79 ) . The rotation of the earth is uniform ; therefore day and night , summer and winter , will continue ...
Page 24
... angle of nearly 1 ° 34 ′ 15 ′′ , and that , in passing through the sun , and about midway between the orbits of Jupiter and Saturn , it may be regarded as the equator of the solar system , dividing it into two parts , which balance one ...
... angle of nearly 1 ° 34 ′ 15 ′′ , and that , in passing through the sun , and about midway between the orbits of Jupiter and Saturn , it may be regarded as the equator of the solar system , dividing it into two parts , which balance one ...
Page 29
... angle of 3 ° 5 ' 30 " , so that the action of the sun and of the satellites themselves produces a nutation and ... angles . It is proved by theory , that , if these relations had only been approximate when the satellites were first ...
... angle of 3 ° 5 ' 30 " , so that the action of the sun and of the satellites themselves produces a nutation and ... angles . It is proved by theory , that , if these relations had only been approximate when the satellites were first ...
Page 31
... 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 " -481 , it is ...
... 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 " -481 , it is ...
Page 39
... angle of 1918 " -1 . 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 shadow ...
... angle of 1918 " -1 . 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 shadow ...
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61 Cygni absorbed action appears atmosphere attraction bismuth blue bodies centre centrifugal force chemical circular polarization coloured rings comet consequently copper crystal dark density diamagnetic diameter diminishes direction distance disturbing earth ecliptic effect electricity equal equator ethereal medium excentricity experiments extreme force gravitation greater heat hemisphere increase intensity Jupiter latitude length lines liquid longitude luminous lunar magnetic mass mean meridian metallic miles molecules moon motion move nebula nodal lines nodes NOTE nutation observed optic axis orbit parallax paramagnetic particles passing perihelion period perpendicular phenomena plane polarized light pole position prism produced quantity rays reflected refraction refrangible retrograde motion revolution revolving right angles rotation round satellites Sir John Herschel solar spectrum sound space stars substances sun's surface telescope temperature terrestrial theory tion tourmaline transmitted tricity undulations Uranus vapour velocity vibrations violet visible Voltaic waves wire