Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 304
... perihelion A be projected on the ecliptic , upon the points p , a , the angles Sp , Y S a , will be the respective heliocentric longitudes of the planet and of the perihelion , the former of which is to be determined , and the latter is ...
... perihelion A be projected on the ecliptic , upon the points p , a , the angles Sp , Y S a , will be the respective heliocentric longitudes of the planet and of the perihelion , the former of which is to be determined , and the latter is ...
Сторінка 305
... perihelion and node being respectively Ta and Y N , which are given , their difference a N is also given , and the angle N of the spherical right- angled triangle A Na , being the inclination of the plane of the orbit to the ecliptic ...
... perihelion and node being respectively Ta and Y N , which are given , their difference a N is also given , and the angle N of the spherical right- angled triangle A Na , being the inclination of the plane of the orbit to the ecliptic ...
Сторінка 347
... perihelion , that of the ascend- ing node , the inclination to the ecliptic , the semiaxis , excen- tricity , and time of perihelion passage , as also whether the motion is direct or retrograde ; ) and , once determined , it becomes ...
... perihelion , that of the ascend- ing node , the inclination to the ecliptic , the semiaxis , excen- tricity , and time of perihelion passage , as also whether the motion is direct or retrograde ; ) and , once determined , it becomes ...
Сторінка 348
... perihelion , it could never more return within the sphere of our observation , but must run off to visit other systems , or be lost in the immensity of space . A very few comets have been ascertained to move in hyperbolas * , but many ...
... perihelion , it could never more return within the sphere of our observation , but must run off to visit other systems , or be lost in the immensity of space . A very few comets have been ascertained to move in hyperbolas * , but many ...
Сторінка 349
... perihelion passage in 1682 , when it appeared in great splendour , with a tail 30 ° in length , was led to conclude its identity with the great comets of 1531 and 1607 , whose elements he had also ascertained . The intervals of these ...
... perihelion passage in 1682 , when it appeared in great splendour , with a tail 30 ° in length , was led to conclude its identity with the great comets of 1531 and 1607 , whose elements he had also ascertained . The intervals of these ...
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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.