Elementary Lessons in Astronomy |
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Page viii
... Rings . Probable Nature of the Rings . Effects produced by the Rings on the Planet . Uranus . Neptune : its Discovery . 88 95 IOO 104 III 116 LESSON XXII . - The Asteroids , or Minor Planets viii CONTENTS .
... Rings . Probable Nature of the Rings . Effects produced by the Rings on the Planet . Uranus . Neptune : its Discovery . 88 95 IOO 104 III 116 LESSON XXII . - The Asteroids , or Minor Planets viii CONTENTS .
Page x
... Rings PAGE 176 182 CHAPTER V. THE MEASUREMENT OF TIME . XXXIII - Ancient Methods of Measurement . Clepsydræ . Sun Dials . Clocks and Watches . Mean Sun. Equation of Time . XXXIV . - Difference of Time . How determined on the Terrestrial ...
... Rings PAGE 176 182 CHAPTER V. THE MEASUREMENT OF TIME . XXXIII - Ancient Methods of Measurement . Clepsydræ . Sun Dials . Clocks and Watches . Mean Sun. Equation of Time . XXXIV . - Difference of Time . How determined on the Terrestrial ...
Page xiv
... Rings 61. Ditto , Sun's Disc , as seen from the Earth 285 187 62. Ditto , reversed . ib . 38. Saturn when the Plane of the Ring passes through the Earth 188 39. Ditto , when the North Surface of the Rings is visible ib . 40 ...
... Rings 61. Ditto , Sun's Disc , as seen from the Earth 285 187 62. Ditto , reversed . ib . 38. Saturn when the Plane of the Ring passes through the Earth 188 39. Ditto , when the North Surface of the Rings is visible ib . 40 ...
Page 33
... Ring nebulæ and Elliptical nebulæ . 3. - Spiral , or Whirlpool nebulæ . 4. - Planetary nebulæ . 5. - Nebulæ surrounding stars . 82. Some of the irregular nebula - those in the constellations Orion and Andromeda , for example — are ...
... Ring nebulæ and Elliptical nebulæ . 3. - Spiral , or Whirlpool nebulæ . 4. - Planetary nebulæ . 5. - Nebulæ surrounding stars . 82. Some of the irregular nebula - those in the constellations Orion and Andromeda , for example — are ...
Page 34
... ring - nebulæ and elliptical nebulæ together because probably the latter are , in several instances , ring - nebulæ looked at sideways . The finest ring - nebula is the 57th in Messier's catalogue ( written ) 57 M. for short ) . It is ...
... ring - nebulæ and elliptical nebulæ together because probably the latter are , in several instances , ring - nebulæ looked at sideways . The finest ring - nebula is the 57th in Messier's catalogue ( written ) 57 M. for short ) . It is ...
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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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