Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page 2
... become en- larged in his imagination into vast globes , the one ap- proaching in magnitude to the earth itself , the other im- mensely surpassing it . The planets , which appear only as stars somewhat brighter than the rest , are to him ...
... become en- larged in his imagination into vast globes , the one ap- proaching in magnitude to the earth itself , the other im- mensely surpassing it . The planets , which appear only as stars somewhat brighter than the rest , are to him ...
Page 10
... become degraded in its application , and confined to superstitious and delusive at- tempts to divine future events by their dependence on pre- * AσTηp , a star ; vouos , a law ; or veμew , to tend , as a shepherd his flock ; so that ...
... become degraded in its application , and confined to superstitious and delusive at- tempts to divine future events by their dependence on pre- * AσTηp , a star ; vouos , a law ; or veμew , to tend , as a shepherd his flock ; so that ...
Page 15
... becomes easy to imagine it in motion - or , rather , difficult to imagine it otherwise ; for , since there is nothing to retain it in one place , should any causes of motion exist , or any forces act upon it , it must obey their impulse ...
... becomes easy to imagine it in motion - or , rather , difficult to imagine it otherwise ; for , since there is nothing to retain it in one place , should any causes of motion exist , or any forces act upon it , it must obey their impulse ...
Page 18
... becomes less obtuse , or , in other words , the apparent an diameter of the earth diminishes , being nowhere so gre 180 ... become a tangent to the sphere at is the line ry . ( 23. ) This explains what is meant by the dip of the hor Mm ...
... becomes less obtuse , or , in other words , the apparent an diameter of the earth diminishes , being nowhere so gre 180 ... become a tangent to the sphere at is the line ry . ( 23. ) This explains what is meant by the dip of the hor Mm ...
Page 18
... becomes less obtuse , or , in other words , the apparent angular diameter of the earth diminishes , being nowhere so ... become a tangent to the sphere at m , as is the line xy . ( 23. ) This explains what is meant by the dip of the ...
... becomes less obtuse , or , in other words , the apparent angular diameter of the earth diminishes , being nowhere so ... become a tangent to the sphere at m , as is the line xy . ( 23. ) This explains what is meant by the dip of the ...
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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.