Fourteen Weeks in Descriptive Astronomy |
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Page 9
... mean solar distance is more than 911 million miles , but vary in the amount . Thus , Newcomb makes the solar paral- lax 8.848 , and the mean solar distance 92,393,000 miles ; while Airy considers the former to be not far from 8'.76 ...
... mean solar distance is more than 911 million miles , but vary in the amount . Thus , Newcomb makes the solar paral- lax 8.848 , and the mean solar distance 92,393,000 miles ; while Airy considers the former to be not far from 8'.76 ...
Page 18
... means of the Saros . He was most emphatically a dreamer . He conceived a system of the universe , in many re- spects correct ; yet he advanced no proof , and made few converts to his views , and they were soon well- nigh forgotten . He ...
... means of the Saros . He was most emphatically a dreamer . He conceived a system of the universe , in many re- spects correct ; yet he advanced no proof , and made few converts to his views , and they were soon well- nigh forgotten . He ...
Page 20
... means even now considered the best - the measurement of an arc of the meridian . PTOLEMAIC THEORY . - The movements of the planets were to the ancients extremely complex . Venus , for instance , was sometimes seen as " evening star " in ...
... means even now considered the best - the measurement of an arc of the meridian . PTOLEMAIC THEORY . - The movements of the planets were to the ancients extremely complex . Venus , for instance , was sometimes seen as " evening star " in ...
Page 29
... MEAN DISTANCES FROM THE SUN . * In rapture over the discovery of these three laws , so marked by that divine simplicity which pervades all the laws of nature , Kepler exclaimed , " Nothing holds me . The die is cast . The book is ...
... MEAN DISTANCES FROM THE SUN . * In rapture over the discovery of these three laws , so marked by that divine simplicity which pervades all the laws of nature , Kepler exclaimed , " Nothing holds me . The die is cast . The book is ...
Page 48
... ( mean ) distance by 1000 , the same sur- face will be represented to us when in aphelion ( July ) by 940 , and when in perihelion ( January ) by 1072 . DIMENSIONS . - Its diameter is about 850,000 miles . * Let us try to understand this ...
... ( mean ) distance by 1000 , the same sur- face will be represented to us when in aphelion ( July ) by 940 , and when in perihelion ( January ) by 1072 . DIMENSIONS . - Its diameter is about 850,000 miles . * Let us try to understand this ...
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Common terms and phrases
ancients Andromeda angle aphelion appearance Aries astronomers atmosphere axis body Boötes bright brilliant Canis Minor Capricornus Cassiopeia celestial centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk Draco earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune node north pole orbit Orion parallax pass path penumbra perihelion Perseus Pisces planet Polaris precession rays revolve ring rising Saturn seasons seen shadow shines shower sidereal sidereal day solar day solar system space spots summer sun's superior planet surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible zodiac