Fourteen Weeks in Descriptive Astronomy |
From inside the book
Results 1-3 of 52
Page 33
... centre . He applied this imaginary law . Sup- pose it is removed four thousand miles from the surface of the earth , or eight thousand miles from the centre . Then , as it is twice as far from the centre , its weight will be diminished ...
... centre . He applied this imaginary law . Sup- pose it is removed four thousand miles from the surface of the earth , or eight thousand miles from the centre . Then , as it is twice as far from the centre , its weight will be diminished ...
Page 124
... centre of the earth , CQ a line perpendicular to the eclip- tic , so that the angle QCP equals the obliquity of the ecliptic . In this position the equatorial pad- ding we have spoken of the ring of matter about the equator - is turned ...
... centre of the earth , CQ a line perpendicular to the eclip- tic , so that the angle QCP equals the obliquity of the ecliptic . In this position the equatorial pad- ding we have spoken of the ring of matter about the equator - is turned ...
Page 143
... CENTRE OF GRAVITY . — It is thought that the centre of gravity of the moon is not exactly at its centre of magnitude , but nearly thirty - three miles beyond , and that the lighter half is toward us . If that be so , this side is ...
... CENTRE OF GRAVITY . — It is thought that the centre of gravity of the moon is not exactly at its centre of magnitude , but nearly thirty - three miles beyond , and that the lighter half is toward us . If that be so , this side is ...
Other editions - View all
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