Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 34
... parallel directions , so that its apparent length remains the same . The dilated size ( generally ) of the sun or moon , when seen near the horizon , beyond what they appear to have when high up in the sky , has nothing to do with ...
... parallel directions , so that its apparent length remains the same . The dilated size ( generally ) of the sun or moon , when seen near the horizon , beyond what they appear to have when high up in the sky , has nothing to do with ...
Сторінка 46
... parallel to the horizon ; and , in short , every appearance leads to suppose that could he travel far enough to the north , he would at length attain a point vertically under the north- ern pole of the heavens , at which none of the ...
... parallel to the horizon ; and , in short , every appearance leads to suppose that could he travel far enough to the north , he would at length attain a point vertically under the north- ern pole of the heavens , at which none of the ...
Сторінка 52
... parallel to the former , and co - extensive with it , to pass ; these , although separated throughout their whole extent by the same interval , viz . a semidiameter of the earth , will yet , on account of the vast distance at which that ...
... parallel to the former , and co - extensive with it , to pass ; these , although separated throughout their whole extent by the same interval , viz . a semidiameter of the earth , will yet , on account of the vast distance at which that ...
Сторінка 58
... Parallels of latitude are small circles on the earth's surface parallel to the equator . Every point in such a circle has the same latitude . Thus , Greenwich is said to be situated in the parallel of 51 ° 28 ′ 40 ′′ . ( 90. ) DEF . 9 ...
... Parallels of latitude are small circles on the earth's surface parallel to the equator . Every point in such a circle has the same latitude . Thus , Greenwich is said to be situated in the parallel of 51 ° 28 ′ 40 ′′ . ( 90. ) DEF . 9 ...
Сторінка 59
... parallels of latitude , one on the north and the other on the south side of the equator , over every point of which respectively , the sun in its diurnal course passes vertically on the 21st of March and the 21st of September in every ...
... parallels of latitude , one on the north and the other on the south side of the equator , over every point of which respectively , the sun in its diurnal course passes vertically on the 21st of March and the 21st of September in every ...
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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.