Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 15
... side round which the sun , moon , and stars can pass ; and that side must , at least , be so far like what we see , that it must have a sky and sunshine , and a day when it is night to us , and vice versâ ; where , in short , “ redit à ...
... side round which the sun , moon , and stars can pass ; and that side must , at least , be so far like what we see , that it must have a sky and sunshine , and a day when it is night to us , and vice versâ ; where , in short , “ redit à ...
Сторінка 19
... side is aware that objects may be seen perfectly well beyond the offing or visible horizon - but not the whole of them . We only see their upper parts . Their bases where they rest on , or rise out of the water , are hid from view by ...
... side is aware that objects may be seen perfectly well beyond the offing or visible horizon - but not the whole of them . We only see their upper parts . Their bases where they rest on , or rise out of the water , are hid from view by ...
Сторінка 34
... side than on the upper ; so that the apparent form is neither circular nor elliptic , but a species of oval , which de- viates more from a circle below than above . This singular effect , which any one may notice in a fine sunset ...
... side than on the upper ; so that the apparent form is neither circular nor elliptic , but a species of oval , which de- viates more from a circle below than above . This singular effect , which any one may notice in a fine sunset ...
Сторінка 59
... 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 year . Their latitudes are about 23 ° 28 ' respectively , north and ...
... 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 year . Their latitudes are about 23 ° 28 ' respectively , north and ...
Сторінка 72
... side of the equinoctial opposite to that of the elevated pole . If Z S be so , the ob- ject is below the horizon . In the same triangle the angles are , 1st , Z P S the lower angle ; 2d , PZS ( the supplement of S Z O , which latter is ...
... side of the equinoctial opposite to that of the elevated pole . If Z S be so , the ob- ject is below the horizon . In the same triangle the angles are , 1st , Z P S the lower angle ; 2d , PZS ( the supplement of S Z O , which latter is ...
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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.