Fourteen Weeks in Descriptive Astronomy |
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Page 11
... CIRCLES SYSTEMS CIRCLES 16 35 37 II . THE SOLAR SYSTEM 43 THE SUN 46 THE PLANETS 65 VULCAN 82 MERCURY 83 VENUS THE EARTH THE SEASONS • 89 96 110 PRECESSION AND NUTATION 120 REFRACTION , ABERRATION AND PARALLAX ALLAX 130 THE MOON 139 ...
... CIRCLES SYSTEMS CIRCLES 16 35 37 II . THE SOLAR SYSTEM 43 THE SUN 46 THE PLANETS 65 VULCAN 82 MERCURY 83 VENUS THE EARTH THE SEASONS • 89 96 110 PRECESSION AND NUTATION 120 REFRACTION , ABERRATION AND PARALLAX ALLAX 130 THE MOON 139 ...
Page 20
... circle , and that the earth is the fixed centre around which the sun and the heavenly bodies move . They then conceived that a bar , or some- thing equivalent , is connected at one end with the earth ; that at some part of this bar the ...
... circle , and that the earth is the fixed centre around which the sun and the heavenly bodies move . They then conceived that a bar , or some- thing equivalent , is connected at one end with the earth ; that at some part of this bar the ...
Page 21
... circle about the earth ; while all the short cranks kept flying around , thus sweeping each planet through a smaller circle . By this theory , we can see that the planets would sometimes go in front of the sun and sometimes behind ; and ...
... circle about the earth ; while all the short cranks kept flying around , thus sweeping each planet through a smaller circle . By this theory , we can see that the planets would sometimes go in front of the sun and sometimes behind ; and ...
Page 22
... circles was necessary to make the planet Mars keep pace with the Ptolemaic theory . No wonder that Alfonso , king of Castile , and a very celebrated patron of Astronomy , revolted at the cumbersome machinery , and cried out , “ If I had ...
... circles was necessary to make the planet Mars keep pace with the Ptolemaic theory . No wonder that Alfonso , king of Castile , and a very celebrated patron of Astronomy , revolted at the cumbersome machinery , and cried out , “ If I had ...
Page 25
... circle is perfect , is the most beautiful figure in nature , has neither beginning nor ending , therefore it is the only form worthy of God , and He must have used it for the orbits of the worlds He has made . Imbued with this romantic ...
... circle is perfect , is the most beautiful figure in nature , has neither beginning nor ending , therefore it is the only form worthy of God , and He must have used it for the orbits of the worlds He has made . Imbued with this romantic ...
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause Celestial Sphere centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior conjunction inferior planet Jupiter latitude length light luminous lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon's motion move naked eye nearly nebula Neptune night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac