Fourteen Weeks in Descriptive Astronomy |
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Page 15
... suns- of which our own sun itself is one - so far removed from us that their light mingles , and makes only a fleecy whiteness . This magnificent panorama of the heavens is before us , inviting our study , and waiting to make known to ...
... suns- of which our own sun itself is one - so far removed from us that their light mingles , and makes only a fleecy whiteness . This magnificent panorama of the heavens is before us , inviting our study , and waiting to make known to ...
Page 17
... sun - dial , and also discovered the " Saros " or " Chaldean Period , " which is the length of time in which the eclipses of the sun and moon repeat themselves in the same order . THE GRECIANS . - In the seventh century B. C. , Thales ...
... sun - dial , and also discovered the " Saros " or " Chaldean Period , " which is the length of time in which the eclipses of the sun and moon repeat themselves in the same order . THE GRECIANS . - In the seventh century B. C. , Thales ...
Page 20
... sun , then going apparently behind the sun , appeared to pass on again in a course directly opposite . At one time she would recede from the sun more and more slowly and coyly , until she would appear to be entirely station- ary ; then ...
... sun , then going apparently behind the sun , appeared to pass on again in a course directly opposite . At one time she would recede from the sun more and more slowly and coyly , until she would appear to be entirely station- ary ; then ...
Page 27
... sun at the centre , and again fol- lowed the planet Mars in its course . But very soon there was as great discrepancy between the observed and computed places as before . Undismayed by this failure , Kepler assumed another hypothesis ...
... sun at the centre , and again fol- lowed the planet Mars in its course . But very soon there was as great discrepancy between the observed and computed places as before . Undismayed by this failure , Kepler assumed another hypothesis ...
Page 39
... sun's apparent path through the heavens ) intersect . ( d ) The MEASUREMENTS are Right Ascension ( R. A. ) , Declination , and Polar Distance . Right Ascension is distance from the Vernal Equi- nox , measured on the equinoctial eastward ...
... sun's apparent path through the heavens ) intersect . ( d ) The MEASUREMENTS are Right Ascension ( R. A. ) , Declination , and Polar Distance . Right Ascension is distance from the Vernal Equi- nox , measured on the equinoctial eastward ...
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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