Outlines of AstronomyLongman, green and Roberts, 1859 - 714 pages |
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Page xxi
... periods , etc. Dimensions and form of their orbits . Transits across the Sun. Superior planets . Their distances , periods , etc. Kepler's laws and their interpretation . Elliptic elements of a planet's orbit . Its heliocentric and ...
... periods , etc. Dimensions and form of their orbits . Transits across the Sun. Superior planets . Their distances , periods , etc. Kepler's laws and their interpretation . Elliptic elements of a planet's orbit . Its heliocentric and ...
Page xxiv
... period of a binary star CHAPTER XVII . OF CLUSTERS OF STARS AND NEBULÆ . - Page 596 Of clustering groups of stars . Globular clusters . Their stability dyna- mically possible . List of the most remarkable . Classification of nebulæ and ...
... period of a binary star CHAPTER XVII . OF CLUSTERS OF STARS AND NEBULÆ . - Page 596 Of clustering groups of stars . Globular clusters . Their stability dyna- mically possible . List of the most remarkable . Classification of nebulæ and ...
Page 85
... period , viz . a day , or 24 hours . But no sooner do we come to examine the matter instrumentally , i . e . by noting , by time- keepers , their successive arrivals on the meridian , than we find differences which cannot be accounted ...
... period , viz . a day , or 24 hours . But no sooner do we come to examine the matter instrumentally , i . e . by noting , by time- keepers , their successive arrivals on the meridian , than we find differences which cannot be accounted ...
Page 167
... period , later , then the difference of longitude between A and B is one hour of time or 15 ° of arc , and B is so much west of A. ( 252. ) In order to a perfectly clear understanding of the principle on which the problem of finding the ...
... period , later , then the difference of longitude between A and B is one hour of time or 15 ° of arc , and B is so much west of A. ( 252. ) In order to a perfectly clear understanding of the principle on which the problem of finding the ...
Page 198
Sir John F. W. Herschel. stars , is traversed by it in the period called the sidereal year , which consists of 365d 6h 9m 9.6s , reckoned in mean solar time or 366d 6h 9m 9.6s reckoned in sidereal time . The reason of this difference ...
Sir John F. W. Herschel. stars , is traversed by it in the period called the sidereal year , which consists of 365d 6h 9m 9.6s , reckoned in mean solar time or 366d 6h 9m 9.6s reckoned in sidereal time . The reason of this difference ...
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Common terms and phrases
amount angle angular appear apsides ascertained astronomical attraction axis bright calculation celestial circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic effect epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination increase 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 phænomena planet planetary pole portion position precession precisely proper motions proportion recede recess reckoned refraction remarkable render respect result revolution revolving right ascension ring rotation round satellites Saturn seen sidereal sidereal day situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible whole zenith