Elementary Lessons in Astronomy |
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Page ix
... Position of the Stars seen at Midnight . Depends upon the two Motions of the Earth . How to tell the Stars . Celestial Globe . Star Maps . The Equatorial Constel- lations . Method of Alignments . XXIX . Apparent Motion of the Sun ...
... Position of the Stars seen at Midnight . Depends upon the two Motions of the Earth . How to tell the Stars . Celestial Globe . Star Maps . The Equatorial Constel- lations . Method of Alignments . XXIX . Apparent Motion of the Sun ...
Page xiii
... Position of the Sun's axis . 4. Part of a Sun - spot , as seen in a powerful tele- scope 5. Section of the Plane of the Ecliptic ó . Mode of constructing an Ellipse 7. The Seasons 8. Explanation of the differ- ent Altitudes of the Sun ...
... Position of the Sun's axis . 4. Part of a Sun - spot , as seen in a powerful tele- scope 5. Section of the Plane of the Ecliptic ó . Mode of constructing an Ellipse 7. The Seasons 8. Explanation of the differ- ent Altitudes of the Sun ...
Page 2
... position with regard to the stars lying near them , or with regard to the sun if we watch that body closely at sunrise and sunset . These are the planets ; the ancients called them wan- dering stars . " 66 5. But the planets are not the ...
... position with regard to the stars lying near them , or with regard to the sun if we watch that body closely at sunrise and sunset . These are the planets ; the ancients called them wan- dering stars . " 66 5. But the planets are not the ...
Page 3
... their surfaces masses of metals and other substances are burning together more fiercely than anything we can imagine . They are globes of the fiercest fire , compared to which a mass of white - B 2 INTRODUCTION 3 Position of the Sun's axis.
... their surfaces masses of metals and other substances are burning together more fiercely than anything we can imagine . They are globes of the fiercest fire , compared to which a mass of white - B 2 INTRODUCTION 3 Position of the Sun's axis.
Page 6
... position in the telescope . 18. Here we see the utility of the science , and how upon one branch of it , PHYSICAL ASTRONOMY , which Ideals with the laws of motion and the structure of the heavenly bodies , is founded another branch ...
... position in the telescope . 18. Here we see the utility of the science , and how upon one branch of it , PHYSICAL ASTRONOMY , which Ideals with the laws of motion and the structure of the heavenly bodies , is founded another branch ...
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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
Popular passages
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