Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 26
... spherical shell , concentric with the general surface of the sea and land , and each of which is rarer , or spe- cifically lighter , than that immediately beneath it ; and denser , or specifically heavier , than that immediately above ...
... spherical shell , concentric with the general surface of the sea and land , and each of which is rarer , or spe- cifically lighter , than that immediately beneath it ; and denser , or specifically heavier , than that immediately above ...
Сторінка 27
... spherical surfaces concentric with Kk , the earth's sur- face . Let S represent a star , or other heavenly body , be- yond the utmost limit of the atmosphere . Then , if the air were away , the spectator would see it in the direction of ...
... spherical surfaces concentric with Kk , the earth's sur- face . Let S represent a star , or other heavenly body , be- yond the utmost limit of the atmosphere . Then , if the air were away , the spectator would see it in the direction of ...
Сторінка 35
... spherical surface . Nevertheless , there would be no impro- priety in his referring their places , geometrically speaking , to those points of such a purely imaginary sphere , which their respective visual rays intersect ; and there ...
... spherical surface . Nevertheless , there would be no impro- priety in his referring their places , geometrically speaking , to those points of such a purely imaginary sphere , which their respective visual rays intersect ; and there ...
Сторінка 36
... spherical convexity of the earth ) ; or unless , by some move- ments proper to the heavenly bodies , they should of them- selves come above his horizon ; or , lastly , unless , by some rotation of the earth itself on its centre , the ...
... spherical convexity of the earth ) ; or unless , by some move- ments proper to the heavenly bodies , they should of them- selves come above his horizon ; or , lastly , unless , by some rotation of the earth itself on its centre , the ...
Сторінка 43
... own visual ray or direction from his eye ) to the imaginary spherical surface , of which he himself occupies the centre . ( See art . 49. ) There is always , therefore ( he would justly argue ) , APPARENT DIURNAL MOTION . 43.
... own visual ray or direction from his eye ) to the imaginary spherical surface , of which he himself occupies the centre . ( See art . 49. ) There is always , therefore ( he would justly argue ) , APPARENT DIURNAL MOTION . 43.
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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.