Fourteen Weeks in Descriptive Astronomy |
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Page 182
... ancient scythe . DESCRIPTION . - We now reach , in our outward jour- ney from the sun , the most remote world known to the ancients . On account of its distance , it shines with a feeble but steady pale yellow light , which 182 THE ...
... ancient scythe . DESCRIPTION . - We now reach , in our outward jour- ney from the sun , the most remote world known to the ancients . On account of its distance , it shines with a feeble but steady pale yellow light , which 182 THE ...
Page 300
... ancients , was something like the fol- lowing . In an eclipse of the moon , that body passes through the earth's shadow in about four hours . If , then , the moon travels along its orbit in four hours a distance equal to the diameter of ...
... ancients , was something like the fol- lowing . In an eclipse of the moon , that body passes through the earth's shadow in about four hours . If , then , the moon travels along its orbit in four hours a distance equal to the diameter of ...
Page 316
... ancients . the theory of " cycles and epicycles ? " 21. Did the ancients believe in the reality of this cumbrous machinery ? Did this theory possess any accuracy ? Could they adapt it to explain any new motion ? 22. What was the remark ...
... ancients . the theory of " cycles and epicycles ? " 21. Did the ancients believe in the reality of this cumbrous machinery ? Did this theory possess any accuracy ? Could they adapt it to explain any new motion ? 22. What was the remark ...
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Common terms and phrases
ancients angle aphelion appear astronomers atmosphere axis bright brilliant called Capricornus Cassiopeia Celestial Sphere centre circle color comet conjunction constellation Cor Caroli dark density diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light longitude luminous lunar magnitude Mars mean distance measured Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune night node north pole obliquity observer orbit parallax pass path penumbra perihelion Perseus planet polar position rays revolve Right Ascension ring rotation satellites Saturn seasons seen shadow shine side sidereal sidereal day solar system space spots summer sun's superior planet supposed surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major varies velocity Venus vernal equinox visible zenith zodiac