Outlines of Astronomy |
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Page xii
... rotation . Trade winds . Determination of geo- graphical positions — of latitudes - of longitudes . Conduct of a trigonometri- cal survey . Of maps . Projections of the sphere . Measurement of heights by the barometer ......... 118 ...
... rotation . Trade winds . Determination of geo- graphical positions — of latitudes - of longitudes . Conduct of a trigonometri- cal survey . Of maps . Projections of the sphere . Measurement of heights by the barometer ......... 118 ...
Page xiii
... Rotation on its own axis . Libration . Appearance of the Earth from it .............................. . CHAPTER VIII . 213 Of terrestrial gravity . Of the law of universal gravitation . Paths of projec- tiles , apparent , real . The ...
... Rotation on its own axis . Libration . Appearance of the Earth from it .............................. . CHAPTER VIII . 213 Of terrestrial gravity . Of the law of universal gravitation . Paths of projec- tiles , apparent , real . The ...
Page 45
... rotation of the earth itself on its centre , the point of its surface which he occupies should be carried round , and presented towards a dif- ferent region of space ; he would never obtain a sight of almost one half the objects ...
... rotation of the earth itself on its centre , the point of its surface which he occupies should be carried round , and presented towards a dif- ferent region of space ; he would never obtain a sight of almost one half the objects ...
Page 46
... rotation on its centre . It is evident that a spectator at rest ( as it appears to him ) on any part of it will , unperceived by himself , be carried round with it : unperceived , we say , because his horizon will constantly contain ...
... rotation on its centre . It is evident that a spectator at rest ( as it appears to him ) on any part of it will , unperceived by himself , be carried round with it : unperceived , we say , because his horizon will constantly contain ...
Page 47
... rotation of the earth to continue in one and the same direction , that is to say , to be performed round one and the same axis , till it has completed an entire revolution , and come back to the position from which it set out when the ...
... rotation of the earth to continue in one and the same direction , that is to say , to be performed round one and the same axis , till it has completed an entire revolution , and come back to the position from which it set out when the ...
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Common terms and phrases
altitude amount angle angular appear apsides ascertained astronomers 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 effect ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity greater heavens heliocentric horizon inclination increase 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 perpendicular perturbations planet planetary pole portion position precession proper motions proportion recede recess reckoned refraction remarkable respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose syzygies tangential force telescope tion Uranus variation velocity visible whole zenith