Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page 207
... excentricity being such as above stated , a perfect coincidence is found to subsist between the distances thus computed , and those de- rived from the measurement of the apparent diameter . ( 350. ) The mean distance of the earth and ...
... excentricity being such as above stated , a perfect coincidence is found to subsist between the distances thus computed , and those de- rived from the measurement of the apparent diameter . ( 350. ) The mean distance of the earth and ...
Page 209
... excentricity of this ellipse is 0.01679 , in parts of a unit equal to the mean distance , or half the longer diameter of the ellipse ; i.e. about one sixtieth part of that semi - diameter ; and the motion of the sun in its circumference ...
... excentricity of this ellipse is 0.01679 , in parts of a unit equal to the mean distance , or half the longer diameter of the ellipse ; i.e. about one sixtieth part of that semi - diameter ; and the motion of the sun in its circumference ...
Page 213
... earth performs an annual elliptic orbit of the dimensions and excentricity , and with a velocity , Principia , lib . i . lex . iii . cor . 14 . regulated according to the law above assigned ; the sun P 3 THE EARTH'S ANNUAL MOTION . 213.
... earth performs an annual elliptic orbit of the dimensions and excentricity , and with a velocity , Principia , lib . i . lex . iii . cor . 14 . regulated according to the law above assigned ; the sun P 3 THE EARTH'S ANNUAL MOTION . 213.
Page 221
... excentricity and deviation from a circle are small , the true place will never deviate very far from that so determined ( which , for distinction's sake , is called the mean place ) , and the former may at all times be calculated from ...
... excentricity and deviation from a circle are small , the true place will never deviate very far from that so determined ( which , for distinction's sake , is called the mean place ) , and the former may at all times be calculated from ...
Page 222
... excentricity . Vice versa , therefore , if the former quantity can be ascertained by observation , the latter may be derived from it ; because , whenever the law , or numerical connection , between two quantities is known , the one can ...
... excentricity . Vice versa , therefore , if the former quantity can be ascertained by observation , the latter may be derived from it ; because , whenever the law , or numerical connection , between two quantities is known , the one can ...
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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.