Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page 26
... poles , some slight deviation from the rigorous expression of this law takes place , and in peculiar localities there is reason to believe that even considerable permanent depressions of the contours of these strata , below their ...
... poles , some slight deviation from the rigorous expression of this law takes place , and in peculiar localities there is reason to believe that even considerable permanent depressions of the contours of these strata , below their ...
Page 39
... of the sphere , whose poles or extremities , where it meets the surface , correspond • Пepíodos , a going round , a circulation or revolution . always to the same points on the sphere . Modes D 4 DIURNAL ROTATION OF THE EARTH . 39.
... of the sphere , whose poles or extremities , where it meets the surface , correspond • Пepíodos , a going round , a circulation or revolution . always to the same points on the sphere . Modes D 4 DIURNAL ROTATION OF THE EARTH . 39.
Page 40
... poles of the imaginary line or axis about which it is at any moment revolving shall hold no fixed places on the surface , but shift upon it every moment . moment . Such changes , however , are inconsistent with the idea of a rotation ...
... poles of the imaginary line or axis about which it is at any moment revolving shall hold no fixed places on the surface , but shift upon it every moment . moment . Such changes , however , are inconsistent with the idea of a rotation ...
Page 42
... POLE , which appears be the common centre of all their motions , and which alone , in the whole heavens , may be considered immoveable . Not that this point is marked by any star . It is a purely imagi- nary centre ; but there is near ...
... POLE , which appears be the common centre of all their motions , and which alone , in the whole heavens , may be considered immoveable . Not that this point is marked by any star . It is a purely imagi- nary centre ; but there is near ...
Page 43
... pole . In short , he will perceive that the whole assemblage of stars visible at once , or in succession , in the heavens , may be regarded as one great constellation , which seems to revolve with a uniform motion , as if it formed one ...
... pole . In short , he will perceive that the whole assemblage of stars visible at once , or in succession , in the heavens , may be regarded as one great constellation , which seems to revolve with a uniform motion , as if it formed one ...
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Common terms and phrases
angle angular appear apsides ascertained astronomical axis bright calculation celestial centre circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic Edition effect elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe heavens heliocentric horizon inclination inequality instance instrument interval Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian moon moon's motion nearly nebula node normal force nutation object observed orbit parallax parallel perigee perihelion period perturbations planet planetary pole portion position Post 8vo precession proper motions proportion recede recess reckoned refraction respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole Woodcuts zenith
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Page 674 - A Dictionary of Science, Literature, and Art : Comprising the History, Description, and Scientific Principles of every Branch of Human Knowledge ; with the Derivation and Definition of all the Terms in General Use. Edited by WT BRANDE, FRSL and E.