A High-school Astronomy: In which the Descriptive, Physical, and Practical are Combined, with Special Reference to the Wants of Academies and Seminaries of LearningSheldon & Company, 1872 - 252 σελίδες |
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
angle angular aphelion apparent magnitude appear Asteroids astronomers atmosphere attraction axis bodies called cause celestial circle comets concave constellations Describe diameter difference direction disk distance earth earth's orbit east eastward ecliptic equator equinoctial equinox exterior planets figure fixed stars full moon globe heavens hemisphere Illustrate by diagram inclination Jupiter length light and heat longitude lunar Mars Mercury meridian minutes moon moon's orbit motion naked eye nearly nebulous Neptune nodes o'clock objects observations opposite parallax pass perihelion planetary planets pole principal stars Prof refracting telescope refraction Remark respect retrograde revolve right ascension rings rings of Saturn satellites Saturn seasons seen shadow shown side sidereal revolution solar day solar eclipse solar system sphere spots student sun and moon sun's supposed surface symbol synodic revolution tails telescope tide-wave tion transit Uranus velocity Venus vernal equinox visible zodiac zodiacal light