Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
З цієї книги
Результати 1-5 із 100
Сторінка xv
... round each other . Describe elliptic orbits under the Newtonian law of gravity . Elements of orbits of several . Actual dimensions of their orbits . Coloured double stars . Phæno- menon of complementary colours . Sanguine stars . Proper ...
... round each other . Describe elliptic orbits under the Newtonian law of gravity . Elements of orbits of several . Actual dimensions of their orbits . Coloured double stars . Phæno- menon of complementary colours . Sanguine stars . Proper ...
Сторінка xvi
... round a common centre . Systematic parallax and aberration . Effect of the motion of light in altering the apparent period of a binary star CHAPTER XVII . OF CLUSTERS OF STARS AND NEBULÆ . - Page 554 Of clustering groups of stars ...
... round a common centre . Systematic parallax and aberration . Effect of the motion of light in altering the apparent period of a binary star CHAPTER XVII . OF CLUSTERS OF STARS AND NEBULÆ . - Page 554 Of clustering groups of stars ...
Сторінка 15
... round a very large extent of the horizon ; and , besides , the moon and stars also set and rise again in all points of the visible horizon . The conclusion is plain : the earth cannot extend indefinitely in depth downwards , nor ...
... round a very large extent of the horizon ; and , besides , the moon and stars also set and rise again in all points of the visible horizon . The conclusion is plain : the earth cannot extend indefinitely in depth downwards , nor ...
Сторінка 22
John Frederick William Herschel. = 4 x 2112 8448 , or , in round numbers , about 8000 miles , which is not very far from the truth . ( 29. ) Such is the first rough result of an attempt to ascertain the earth's magnitude ; and it will ...
John Frederick William Herschel. = 4 x 2112 8448 , or , in round numbers , about 8000 miles , which is not very far from the truth . ( 29. ) Such is the first rough result of an attempt to ascertain the earth's magnitude ; and it will ...
Сторінка 34
... round , assumes , as it approaches the horizon , a flattened or oval outline ; its horizontal diameter being visibly greater than that in a vertical direction . When very near the hori- zon , this flattening is evidently more ...
... round , assumes , as it approaches the horizon , a flattened or oval outline ; its horizontal diameter being visibly greater than that in a vertical direction . When very near the hori- zon , this flattening is evidently more ...
Інші видання - Показати все
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
Популярні уривки
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.