Fourteen Weeks in Descriptive Astronomy |
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Page 5
... velocity . Much additional information has been obtained concerning Meteors and Shooting Stars . The investigations connected with Spectrum Analy- sis have been especially suggestive . Thus on every hand the facts of Astronomy have been ...
... velocity . Much additional information has been obtained concerning Meteors and Shooting Stars . The investigations connected with Spectrum Analy- sis have been especially suggestive . Thus on every hand the facts of Astronomy have been ...
Page 27
... velocity in the different parts of their orbits . He next set about establish- ing some law by which this speed could be deter- mined , and the place of the planet computed . He drew an ellipse , and marked the various positions of the ...
... velocity in the different parts of their orbits . He next set about establish- ing some law by which this speed could be deter- mined , and the place of the planet computed . He drew an ellipse , and marked the various positions of the ...
Page 32
... velocity , but move now with the same speed which they received in the beginning from the Divine hand . But this would make them all pass through straight , and not circular orbits . What causes the curve ? Obviously another force . For ...
... velocity , but move now with the same speed which they received in the beginning from the Divine hand . But this would make them all pass through straight , and not circular orbits . What causes the curve ? Obviously another force . For ...
Page 46
... velocity , and yet with such accuracy that the solar system is the most perfect timepiece known . THE SUN . Sign , O , a buckler with its boss . DISTANCE . The sun's average distance from the earth is about 91 million miles . Since the ...
... velocity , and yet with such accuracy that the solar system is the most perfect timepiece known . THE SUN . Sign , O , a buckler with its boss . DISTANCE . The sun's average distance from the earth is about 91 million miles . Since the ...
Page 66
... earth ; but their days are of dif- ferent lengths from our own . 6. Agreeably to the principles of gravitation , their velocity is greatest at those parts of their orbit which are nearest the sun , and least at the 66 THE SOLAR SYSTEM .
... earth ; but their days are of dif- ferent lengths from our own . 6. Agreeably to the principles of gravitation , their velocity is greatest at those parts of their orbit which are nearest the sun , and least at the 66 THE SOLAR SYSTEM .
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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