Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page 6
... determined to make ourselves distinctly understood , and will appeal to reason at all . As for the method of assertion , or a direct demand on the faith of the student ( though in some complex cases indispensable , where illustrative ...
... determined to make ourselves distinctly understood , and will appeal to reason at all . As for the method of assertion , or a direct demand on the faith of the student ( though in some complex cases indispensable , where illustrative ...
Page 28
... determination of the angle SA s , by which a celestial object at any assigned altitude , HA S , is raised in appearance above its true place , is , unfortunately , a very difficult subject of physical inquiry , and one on which ...
... determination of the angle SA s , by which a celestial object at any assigned altitude , HA S , is raised in appearance above its true place , is , unfortunately , a very difficult subject of physical inquiry , and one on which ...
Page 62
... determined . ( 105. ) DEF . 22. The declination of a heavenly body is its angular distance from the equinoctial or celestial equator , or the complement to 90 ° of its angular distance from the nearest pole , which latter distance is ...
... determined . ( 105. ) DEF . 22. The declination of a heavenly body is its angular distance from the equinoctial or celestial equator , or the complement to 90 ° of its angular distance from the nearest pole , which latter distance is ...
Page 63
... determined , will be explained further on . ( 109. ) The right ascensions of celestial objects are always reckoned eastwards from the equinox , and are estimated either in degrees , minutes , and seconds , as in the case of terrestrial ...
... determined , will be explained further on . ( 109. ) The right ascensions of celestial objects are always reckoned eastwards from the equinox , and are estimated either in degrees , minutes , and seconds , as in the case of terrestrial ...
Page 73
... moment of observa- ation ; and , therefore , the local sidereal time at that moment . This is a very useful observation for determining the latitude and time at an unknown station . - CHAPTER III . * - - - - ― ELEMENTARY RELATIONS . 73.
... moment of observa- ation ; and , therefore , the local sidereal time at that moment . This is a very useful observation for determining the latitude and time at an unknown station . - CHAPTER III . * - - - - ― ELEMENTARY RELATIONS . 73.
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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.