Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 35
... distance . Perhaps he might judge those which appear to him large and bright , to be nearer to him than the smaller ... distance from the eye , yet we lay them all down in a picture on one plane , and at one distance , in their actual ...
... distance . Perhaps he might judge those which appear to him large and bright , to be nearer to him than the smaller ... distance from the eye , yet we lay them all down in a picture on one plane , and at one distance , in their actual ...
Сторінка 49
... distance of an object viewed is greater ; and when that distance is extremely great in comparison with the change in our point of view , the parallax becomes insensible ; or , in other words , objects do not appear to vary in situation ...
... distance of an object viewed is greater ; and when that distance is extremely great in comparison with the change in our point of view , the parallax becomes insensible ; or , in other words , objects do not appear to vary in situation ...
Сторінка 51
... distance of the stars from the earth cannot be so small as 100,000 of the earth's diameters . It is , indeed , incomparably greater ; for we shall hereafter find it fully demonstrated that the distance just named , immense as it may ...
... distance of the stars from the earth cannot be so small as 100,000 of the earth's diameters . It is , indeed , incomparably greater ; for we shall hereafter find it fully demonstrated that the distance just named , immense as it may ...
Сторінка 52
... distance of the stars , would be equally un- discernible . If , therefore , at the point on which a spectator stands , we draw a plane touching the globe , and prolong it in imagination till it attain the region of the stars , and ...
... distance of the stars , would be equally un- discernible . If , therefore , at the point on which a spectator stands , we draw a plane touching the globe , and prolong it in imagination till it attain the region of the stars , and ...
Сторінка 62
... distance from the nearest pole , which latter distance is called its Polar distance . Declinations are reckoned plus or minus , according as the object is situated in the northern or southern celestial hemi- sphere . Polar distances are ...
... distance from the nearest pole , which latter distance is called its Polar distance . Declinations are reckoned plus or minus , according as the object is situated in the northern or southern celestial hemi- sphere . Polar distances are ...
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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.