Fourteen Weeks in Descriptive Astronomy |
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Page 25
... heavens with the intelligence of a philosopher and the splendor of a king . His indefatigable in- dustry and zeal resulted in the accumulation of a vast fund of astronomical knowledge , which , how- ever , he lacked the wit to apply to ...
... heavens with the intelligence of a philosopher and the splendor of a king . His indefatigable in- dustry and zeal resulted in the accumulation of a vast fund of astronomical knowledge , which , how- ever , he lacked the wit to apply to ...
Page 31
... heavens there are two favorable stars , Jupiter and Venus ; two unpropitious , Mars and Saturn ; two luminaries , the Sun and Moon ; and Mercury alone , undecided and indifferent . From which , and from many other phenomena of Nature ...
... heavens there are two favorable stars , Jupiter and Venus ; two unpropitious , Mars and Saturn ; two luminaries , the Sun and Moon ; and Mercury alone , undecided and indifferent . From which , and from many other phenomena of Nature ...
Page 34
... heavenly bodies , calculating and testing their orbits . At last he turned his attention to the sun , and , by reasoning equally conclusive , proved that the attrac- tion of that great central orb compels all the planets to revolve ...
... heavenly bodies , calculating and testing their orbits . At last he turned his attention to the sun , and , by reasoning equally conclusive , proved that the attrac- tion of that great central orb compels all the planets to revolve ...
Page 35
... heavens and try to locate some object among the mazes of the stars . We are bewildered , and immediately feel the neces- sity of some system of measurement . Let us try to understand the one adopted by astronomers . THE CELESTIAL SPHERE ...
... heavens and try to locate some object among the mazes of the stars . We are bewildered , and immediately feel the neces- sity of some system of measurement . Let us try to understand the one adopted by astronomers . THE CELESTIAL SPHERE ...
Page 37
... heavens . The Sensible Horizon is the small circle where the earth and sky seem to meet ; it is parallel to the rational horizon , but distant from it the semi - diameter of the earth . No two places have the same sensible horizon : any ...
... heavens . The Sensible Horizon is the small circle where the earth and sky seem to meet ; it is parallel to the rational horizon , but distant from it the semi - diameter of the earth . No two places have the same sensible horizon : any ...
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause Celestial Sphere centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior conjunction inferior planet Jupiter latitude length light luminous lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon's motion move naked eye nearly nebula Neptune night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac