Elementary Lessons in Astronomy |
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Page ix
... Path . How the Times of Sunrise and Sunset , and the Length of the Day and Night , may be determined by means of the Celestial Globe XXX . - Apparent Motions of the Moon and Planets . Extreme Meridian Heights of the Moon . Angle of her Path ...
... Path . How the Times of Sunrise and Sunset , and the Length of the Day and Night , may be determined by means of the Celestial Globe XXX . - Apparent Motions of the Moon and Planets . Extreme Meridian Heights of the Moon . Angle of her Path ...
Page x
... Paths among the Stars . Effects on Physical Observations . Mars . Saturn's Rings PAGE 176 182 CHAPTER V. THE MEASUREMENT OF TIME . XXXIII - Ancient Methods of Measurement . Clepsydræ . Sun Dials . Clocks and Watches . Mean Sun. Equation ...
... Paths among the Stars . Effects on Physical Observations . Mars . Saturn's Rings PAGE 176 182 CHAPTER V. THE MEASUREMENT OF TIME . XXXIII - Ancient Methods of Measurement . Clepsydræ . Sun Dials . Clocks and Watches . Mean Sun. Equation ...
Page xiv
... Path of Venus among the Stars in 1868 ordinates 266 183 58 . Measurement of the dis- 35. Path of Saturn among the Stars , 1862-5 tance of the Moon 279 184 59. Ditto of Mars 281 36. Orbits of Mars and the Earth 60. Transit of Venus 283 ...
... Path of Venus among the Stars in 1868 ordinates 266 183 58 . Measurement of the dis- 35. Path of Saturn among the Stars , 1862-5 tance of the Moon 279 184 59. Ditto of Mars 281 36. Orbits of Mars and the Earth 60. Transit of Venus 283 ...
Page 40
... path ( the points it occupies in June and December ) the spots are seen to describe straight lines across the disc , while midway between these points ( September and March ) their paths are observed to be sharply curved , in one case ...
... path ( the points it occupies in June and December ) the spots are seen to describe straight lines across the disc , while midway between these points ( September and March ) their paths are observed to be sharply curved , in one case ...
Page 41
... paths of the spots across the disc , as seen from the Earth at different times of the year . The arrows show the direction in which the Sun turns round . case . The Sun's axis inclines towards the point occu- pied by the Earth in ...
... paths of the spots across the disc , as seen from the Earth at different times of the year . The arrows show the direction in which the Sun turns round . case . The Sun's axis inclines towards the point occu- pied by the Earth in ...
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Common terms and phrases
angular aphelion apparent motion appear astronomers atmosphere attraction base line Boötes called Cassiopea celestial equator celestial pole celestial sphere centre Cepheus clock colour comet constellations density determined diameter direction Earth Earth's axis Earth's rotation Earth's surface ecliptic equal equatorial exactly eye-piece fact fall feet globe Greenwich heat heavenly body heavens Hence horizon inclined instance Jupiter latitude length lens LESSON light longitude Mars mass mean sun measured meridian meteors midnight miles Moon Moon's nearly nebulæ Neptune night node noon object-glass observed occupied parallax pass path perihelion period planet point of Aries polar portion position prism rays refraction represent revolution revolve round right ascension ring rise round the Sun satellites Saturn seen shadow side sidereal solar day solstice spectrum stars Sun's suppose telescope tion triangle true sun Uranus Ursa Major vapour varies velocity Venus vernal equinox visible zenith distance
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