Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page xi
... Meridian circle . Fixation of polar and horizontal points . The level , plumb- line , artificial horizon . Principle of collimation . Collimators of Rittenhouse , Kater , and Benzenberg . Of compound instruments with co - ordinate ...
... Meridian circle . Fixation of polar and horizontal points . The level , plumb- line , artificial horizon . Principle of collimation . Collimators of Rittenhouse , Kater , and Benzenberg . Of compound instruments with co - ordinate ...
Page 57
... meridian of a station on the earth's surface , is a great circle of the globe passing through both poles and through the place . The plane of the meridian is the plane in which that circle lies . ( 86. ) DEF . 5. The sensible and the ...
... meridian of a station on the earth's surface , is a great circle of the globe passing through both poles and through the place . The plane of the meridian is the plane in which that circle lies . ( 86. ) DEF . 5. The sensible and the ...
Page 58
... meridian line is the line of intersection of the plane of the meridian of any station with the plane of the sensible horizon , and therefore marks the north and south points of the horizon , or the directions in which a spectator must ...
... meridian line is the line of intersection of the plane of the meridian of any station with the plane of the sensible horizon , and therefore marks the north and south points of the horizon , or the directions in which a spectator must ...
Page 61
... meridian of a spectator is the great circle marked out on the sphere by the prolongation of the plane of his terrestrial meridian . If the earth be sup- posed at rest , this is a fixed circle , and all the stars are carried across it in ...
... meridian of a spectator is the great circle marked out on the sphere by the prolongation of the plane of his terrestrial meridian . If the earth be sup- posed at rest , this is a fixed circle , and all the stars are carried across it in ...
Page 62
... meridian of the place of observation . We shall always reckon it positively from the upper culmination ( art . 125. ) westwards , or in conformity with the apparent diurnal motion , completely round the circle from 0 ° to 360 ° . Hour ...
... meridian of the place of observation . We shall always reckon it positively from the upper culmination ( art . 125. ) westwards , or in conformity with the apparent diurnal motion , completely round the circle from 0 ° to 360 ° . Hour ...
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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.