Fourteen Weeks in Descriptive Astronomy |
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Page 138
... parallax . In astronomical calculations , the position of a body as seen from the earth's surface is called its apparent place , while that in which it would be seen from the centre of the earth is called its true place . Thus , in the ...
... parallax . In astronomical calculations , the position of a body as seen from the earth's surface is called its apparent place , while that in which it would be seen from the centre of the earth is called its true place . Thus , in the ...
Page 302
... parallax . The arc G'C ' measures the angle C'MG ' ; that angle is equal to the opposite angle GMC = 11 ° . Now , in the four- sided figure GECM , the sides GE ... parallax in the same manner as the lunar parallax . 302 THE SIDEREAL SYSTEM .
... parallax . The arc G'C ' measures the angle C'MG ' ; that angle is equal to the opposite angle GMC = 11 ° . Now , in the four- sided figure GECM , the sides GE ... parallax in the same manner as the lunar parallax . 302 THE SIDEREAL SYSTEM .
Page 322
... parallax . Illustrate . 138. Define true and apparent place . How does parallax What is the practical importance of this subject ( p . 300 , et seq . ) ? vary ? 139. Define horizontal parallax . What is the sun's hori- zontal parallax ...
... parallax . Illustrate . 138. Define true and apparent place . How does parallax What is the practical importance of this subject ( p . 300 , et seq . ) ? vary ? 139. Define horizontal parallax . What is the sun's hori- zontal parallax ...
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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