Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 16
... nature itself affords ; Etna , Teneriffe , Mowna Roa , are eminences from which no contemptible aliquot part of the whole earth's surface can be seen ; but from these again - in those few and rare occasions when the transparency of the ...
... nature itself affords ; Etna , Teneriffe , Mowna Roa , are eminences from which no contemptible aliquot part of the whole earth's surface can be seen ; but from these again - in those few and rare occasions when the transparency of the ...
Сторінка 24
... nature of the air itself , which is compressible , i . e . ca- pable of being condensed or crowded into a smaller space in proportion to the incumbent pressure , it is easy to see that , although by rising still higher we should ...
... nature of the air itself , which is compressible , i . e . ca- pable of being condensed or crowded into a smaller space in proportion to the incumbent pressure , it is easy to see that , although by rising still higher we should ...
Сторінка 25
... nature of waves , which prevail in it to an immense extent . In other words , the law of diminution of the air's density as we recede upwards from the level of the sea is the same in every column into which we may conceive it divided ...
... nature of waves , which prevail in it to an immense extent . In other words , the law of diminution of the air's density as we recede upwards from the level of the sea is the same in every column into which we may conceive it divided ...
Сторінка 33
... nature of atmospheric refraction , and the mode in which it is produced in the progress of a ray of light through successive strata , or layers , of the atmosphere , it will be evident , that whenever a ray passes obliquely from a ...
... nature of atmospheric refraction , and the mode in which it is produced in the progress of a ray of light through successive strata , or layers , of the atmosphere , it will be evident , that whenever a ray passes obliquely from a ...
Сторінка 39
... nature presents , the daily rising and setting of the sun and stars , their progress through the vault of the heavens , and their return to the same apparent places at the same hours of the day and night . The accomplishment of this ...
... nature presents , the daily rising and setting of the sun and stars , their progress through the vault of the heavens , and their return to the same apparent places at the same hours of the day and night . The accomplishment of this ...
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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.