Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 28
... appear more elevated above the horizon A H , when seen through the refracting atmosphere , than it would appear were there no such atmosphere . Since , however , the dis- position of the strata is the same in all directions around A ...
... appear more elevated above the horizon A H , when seen through the refracting atmosphere , than it would appear were there no such atmosphere . Since , however , the dis- position of the strata is the same in all directions around A ...
Сторінка 33
... appear deviated from its true place , whether that object be , like the celestial bodies , entirely be- yond the atmosphere , or , like the summits of mountains seen from the plains , or other terrestrial stations at different levels ...
... appear deviated from its true place , whether that object be , like the celestial bodies , entirely be- yond the atmosphere , or , like the summits of mountains seen from the plains , or other terrestrial stations at different levels ...
Сторінка 34
... appear circular , though displaced ; but the lower portions being more raised than the upper , the vertical diameter is thereby short- ened , while the two extremities of its horizontal diameter are equally raised , and in parallel ...
... appear circular , though displaced ; but the lower portions being more raised than the upper , the vertical diameter is thereby short- ened , while the two extremities of its horizontal diameter are equally raised , and in parallel ...
Сторінка 35
... appear to him large and bright , to be nearer to him than the smaller and less brilliant ; but , independent of other means of judging , he would have no warrant for this opinion , any more than for the idea that all were equidistant ...
... appear to him large and bright , to be nearer to him than the smaller and less brilliant ; but , independent of other means of judging , he would have no warrant for this opinion , any more than for the idea that all were equidistant ...
Сторінка 36
... appears to us as large as the sun , though less bright , may owe that apparent equality to its greater proximity , and may be really much less ; while both the moon and sun may only appear larger and brighter than the stars , on account ...
... appears to us as large as the sun , though less bright , may owe that apparent equality to its greater proximity , and may be really much less ; while both the moon and sun may only appear larger and brighter than the stars , on account ...
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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.