Fourteen Weeks in Descriptive Astronomy |
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Page 18
He held that the sun is the centre of the solar system, and that the planets revolve
about it in circular orbits ; that the earth revolves daily on its axis, and yearly
around the sun ; that Venus is both morning and evening star ; that the planets
are ...
He held that the sun is the centre of the solar system, and that the planets revolve
about it in circular orbits ; that the earth revolves daily on its axis, and yearly
around the sun ; that Venus is both morning and evening star ; that the planets
are ...
Page 24
He applied this thought to the movements of the heavenly bodies, and
maintained that, instead of all the starry host revolving about the earth once in
twenty-four hours, the earth simply turns on its own axis : that this produces the
apparent daily ...
He applied this thought to the movements of the heavenly bodies, and
maintained that, instead of all the starry host revolving about the earth once in
twenty-four hours, the earth simply turns on its own axis : that this produces the
apparent daily ...
Page 37
(c) Points. — These are the Zenith, the Nadir, the N., S., E., and W. points. The
Zenith is the point directly overhead, and the Nadir the one directly underfoot.
They are also the poles of the horizon — i. e., the points where the axis of the
horizon ...
(c) Points. — These are the Zenith, the Nadir, the N., S., E., and W. points. The
Zenith is the point directly overhead, and the Nadir the one directly underfoot.
They are also the poles of the horizon — i. e., the points where the axis of the
horizon ...
Page 39
The Celestial Poles are the points where the axis of the earth extended pierces
the Celestial Sphere, and are the extremities of the celestial axis, just as the
poles of the earth are the extremities of the earth's axis. The North Point is
marked very ...
The Celestial Poles are the points where the axis of the earth extended pierces
the Celestial Sphere, and are the extremities of the celestial axis, just as the
poles of the earth are the extremities of the earth's axis. The North Point is
marked very ...
Page 41
The Poles of the Ecliptic are the points where the axis of the earth's orbit meets
the Celestial Sphere. (Little used.) The Equinoxes are the points where the
ecliptic intersects the equinoctial. The place where the sun crosses the
equinoctial* in ...
The Poles of the Ecliptic are the points where the axis of the earth's orbit meets
the Celestial Sphere. (Little used.) The Equinoxes are the points where the
ecliptic intersects the equinoctial. The place where the sun crosses the
equinoctial* in ...
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Common terms and phrases
ancients angle aphelion appear Aries astronomers atmosphere axis bright brilliant Canis Minor Capricornus Cassiopeia cause celestial 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 globe heat heavenly bodies heavens Herschel horizon inclined inferior 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 node north pole orbit Orion parallax pass path penumbra perihelion Perseus Pisces planet polar Polaris rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space sphere spots summer sun's surface synodic revolution tance Taurus telescope theory tion umbra Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter zenith Zodiac
Bibliographic information
| Title | Fourteen Weeks in Descriptive Astronomy Fourteen weeks courses in natural science |
| Author | Joel Dorman Steele |
| Publisher | A.S. Barnes & Company, 1873 |
| Original from | the University of California |
| Digitized | 14 Oct 2010 |
| Length | 336 pages |
| Export Citation | BiBTeX EndNote RefMan |