Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page 6
... difference is that of pioneering a road through an untraversed country and advancing at ease along a broad and beaten highway ; that is to say , if we are determined to make ourselves distinctly understood , and will appeal to reason at ...
... difference is that of pioneering a road through an untraversed country and advancing at ease along a broad and beaten highway ; that is to say , if we are determined to make ourselves distinctly understood , and will appeal to reason at ...
Page 33
... difference of level , accompanied , as it must be , with a difference of den- sity in the aërial strata , must also have , corresponding to it , a certain amount of refraction ; less , indeed , than what would be produced by the whole ...
... difference of level , accompanied , as it must be , with a difference of den- sity in the aërial strata , must also have , corresponding to it , a certain amount of refraction ; less , indeed , than what would be produced by the whole ...
Page 38
... difference will be in his view of the tree itself , of which , in the former case , he will see every part , but , in the latter , only that portion of it which remains constantly opposite to him , and immediately under his eye . ( 53 ...
... difference will be in his view of the tree itself , of which , in the former case , he will see every part , but , in the latter , only that portion of it which remains constantly opposite to him , and immediately under his eye . ( 53 ...
Page 49
... difference of angular position of P , with respect to the invariable direction A B D , when viewed from A and from B , is the difference of the two angles DB P and D A P ; now , D B P being the exterior angle of the triangle A B P , is ...
... difference of angular position of P , with respect to the invariable direction A B D , when viewed from A and from B , is the difference of the two angles DB P and D A P ; now , D B P being the exterior angle of the triangle A B P , is ...
Page 51
... difference of the results , of his change of distance from them arising from his change of place , although that difference may be so small as to produce no change in their general aspect to his unassisted sight . This is one of the ...
... difference of the results , of his change of distance from them arising from his change of place , although that difference may be so small as to produce no change in their general aspect to his unassisted sight . This is one of the ...
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Common terms and phrases
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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Page 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.