Fourteen Weeks in Descriptive Astronomy |
From inside the book
Results 1-3 of 34
Page 106
... path about the sun at a mean distance of 91 million of miles . This path is called the ecliptic ; its eccentricity , which is greater than that of the orbit of Venus , changes about 100 per century , so that in time the orbit would ...
... path about the sun at a mean distance of 91 million of miles . This path is called the ecliptic ; its eccentricity , which is greater than that of the orbit of Venus , changes about 100 per century , so that in time the orbit would ...
Page 109
... path through the heavens . When the earth is in any part of the ecliptic , the sun seems to us to be in the point directly opposite . For example , when the earth is in Libra ( ~ ) * — autumnal equinox - the sun is in Aries ( Y ) ...
... path through the heavens . When the earth is in any part of the ecliptic , the sun seems to us to be in the point directly opposite . For example , when the earth is in Libra ( ~ ) * — autumnal equinox - the sun is in Aries ( Y ) ...
Page 149
... path CF , the moon sinks below the horizon the distance ab , and when mov- ing along the path ED , only the distance cd . It is ob- vious that be- fore the moon can rise in the former case , the horizon must be de- pressed the E Fig ...
... path CF , the moon sinks below the horizon the distance ab , and when mov- ing along the path ED , only the distance cd . It is ob- vious that be- fore the moon can rise in the former case , the horizon must be de- pressed the E Fig ...
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