Fourteen Weeks in Descriptive Astronomy |
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Page 134
... visible to us out of direct sunshine ; every shadow of a passing cloud would be pitchy dark- ness ; the stars would be visible all day ; no window would admit light except as the sun shone directly through it , and a man would require a ...
... visible to us out of direct sunshine ; every shadow of a passing cloud would be pitchy dark- ness ; the stars would be visible all day ; no window would admit light except as the sun shone directly through it , and a man would require a ...
Page 158
... visible at London since 1715 , and previous to that , there had been none visible for five and a half centuries . ( 10. ) A solar eclipse comes on the western limb or edge of the sun and passes off on the eastern . ( 11. ) The disk of ...
... visible at London since 1715 , and previous to that , there had been none visible for five and a half centuries . ( 10. ) A solar eclipse comes on the western limb or edge of the sun and passes off on the eastern . ( 11. ) The disk of ...
Page 234
... visible through the entire year ; the second , those whose orbits can be seen only in part on any given night ; and the third , those whose paths just graze our southern horizon , or never pass above it . THE CONSTELLATIONS . NORTHERN ...
... visible through the entire year ; the second , those whose orbits can be seen only in part on any given night ; and the third , those whose paths just graze our southern horizon , or never pass above it . THE CONSTELLATIONS . NORTHERN ...
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Common terms and phrases
ancients angle aphelion appear astronomers atmosphere axis bright brilliant called Capricornus Cassiopeia Celestial Sphere centre circle color comet conjunction constellation Cor Caroli dark density diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light longitude luminous lunar magnitude Mars mean distance measured Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune night node north pole obliquity observer orbit parallax pass path penumbra perihelion Perseus planet polar position rays revolve Right Ascension ring rotation satellites Saturn seasons seen shadow shine side sidereal sidereal day solar system space spots summer sun's superior planet supposed surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major varies velocity Venus vernal equinox visible zenith zodiac