Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 49
... respect to the invariable direction A B D , when viewed from A and from B , is the difference of the two angles DB P ... respects , we may form of the stars , it is quite clear they must be immensely distant . Were it not so , the ...
... respect to the invariable direction A B D , when viewed from A and from B , is the difference of the two angles DB P ... respects , we may form of the stars , it is quite clear they must be immensely distant . Were it not so , the ...
Сторінка 51
... respect to matters of fact , and conclusions thence deducible , from what we should B hold , were we to rely in all cases on the mere judgment of the eye . To so great a nicety have such observations been carried by the aid of an ...
... respect to matters of fact , and conclusions thence deducible , from what we should B hold , were we to rely in all cases on the mere judgment of the eye . To so great a nicety have such observations been carried by the aid of an ...
Сторінка 56
... respect to that common centre ( supposing him to possess the necessary data ) . If there were only two observers , in fixed stations , one might agree to refer his observations to the other station ; but , as every locality on the globe ...
... respect to that common centre ( supposing him to possess the necessary data ) . If there were only two observers , in fixed stations , one might agree to refer his observations to the other station ; but , as every locality on the globe ...
Сторінка 62
... respect to sign is avoided . ( 106. ) DEF . 23. Hour circles of the sphere , or circles of declination , are great circles passing through the poles , and of course perpendicular to the equinoctial . The hour circle , passing through ...
... respect to sign is avoided . ( 106. ) DEF . 23. Hour circles of the sphere , or circles of declination , are great circles passing through the poles , and of course perpendicular to the equinoctial . The hour circle , passing through ...
Сторінка 66
... respect to the spectator , their ap- parent aspects , as seen by him projected on the imaginary concave of the heavens ; and , vice versâ , from the apparent configurations and movements of objects so seen projected , to conclude , so ...
... respect to the spectator , their ap- parent aspects , as seen by him projected on the imaginary concave of the heavens ; and , vice versâ , from the apparent configurations and movements of objects so seen projected , to conclude , so ...
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Outlines of Astronomy John Frederick William Herschel,Sir John Frederick William Herschel Повний перегляд - 1851 |
Загальні терміни та фрази
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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Сторінка 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.