Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page 14
... remain at rest , and we leave them behind in the air . Still , the illusion , so far as massive objects and our own movements are concerned , remains complete ; and when we look at the shore , we then perceive the effect of our own ...
... remain at rest , and we leave them behind in the air . Still , the illusion , so far as massive objects and our own movements are concerned , remains complete ; and when we look at the shore , we then perceive the effect of our own ...
Page 20
... remain , presenting the appearance c . But if , in this state of things , the spectator quickly as- cends to a higher sta- tion , T , whose visible horizon is at D , the hull comes again in sight ; and , when he descends again , he ...
... remain , presenting the appearance c . But if , in this state of things , the spectator quickly as- cends to a higher sta- tion , T , whose visible horizon is at D , the hull comes again in sight ; and , when he descends again , he ...
Page 28
... remain constantly in the same vertical plane , S A C ' , passing through the eye , the object , and the earth's centre . ( 40. ) The effect of the air's refraction , then , is to raise all the heavenly bodies higher above the horizon in ...
... remain constantly in the same vertical plane , S A C ' , passing through the eye , the object , and the earth's centre . ( 40. ) The effect of the air's refraction , then , is to raise all the heavenly bodies higher above the horizon in ...
Page 34
... remains the same . The dilated size ( generally ) of the sun or moon , when seen near the horizon , beyond what they appear to have when high up in the sky , has nothing to do with refraction . It is an illusion of the judgment ...
... remains the same . The dilated size ( generally ) of the sun or moon , when seen near the horizon , beyond what they appear to have when high up in the sky , has nothing to do with refraction . It is an illusion of the judgment ...
Page 38
... remains constantly opposite to him , and immediately under his eye . ( 53. ) By such a rotation of the earth , then , as we have supposed , the horizon of a stationary spectator will be con- stantly depressing itself below those objects ...
... remains constantly opposite to him , and immediately under his eye . ( 53. ) By such a rotation of the earth , then , as we have supposed , the horizon of a stationary spectator will be con- stantly depressing itself below those objects ...
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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.