Fourteen Weeks in Descriptive Astronomy |
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Page 10
... motion of the nodes of the ring , throw them one day later at each period . It will be noticed that it is not necessary that the period of the showers and that of the meteors should exactly agree . " ( Swift . ) ( P. 224. ) It is now ...
... motion of the nodes of the ring , throw them one day later at each period . It will be noticed that it is not necessary that the period of the showers and that of the meteors should exactly agree . " ( Swift . ) ( P. 224. ) It is now ...
Page 15
... motion - the most rapid of any known even to Astronomy - but through such immense or- bits that they seem to us stationary . Then , too , diagonally girdling the heavens , is a whitish , vapory belt the Milky Way . This is composed of ...
... motion - the most rapid of any known even to Astronomy - but through such immense or- bits that they seem to us stationary . Then , too , diagonally girdling the heavens , is a whitish , vapory belt the Milky Way . This is composed of ...
Page 21
... be detected by the rude instruments then in use . As soon as a new motion of one of the heavenly bodies was discov- ered , a new crank , and of course a new circle , was added to account for the fact . Thus the system HISTORY . 21.
... be detected by the rude instruments then in use . As soon as a new motion of one of the heavenly bodies was discov- ered , a new crank , and of course a new circle , was added to account for the fact . Thus the system HISTORY . 21.
Page 23
... He noticed how constantly , when we are riding swiftly , we forget our own motion , and think that the trees and fences are gliding by us in * Ple ' - ya - dez . the contrary direction . He applied this thought to the HISTORY . 23.
... He noticed how constantly , when we are riding swiftly , we forget our own motion , and think that the trees and fences are gliding by us in * Ple ' - ya - dez . the contrary direction . He applied this thought to the HISTORY . 23.
Page 24
... motion of the earth about the sun , transferred in the same manner to that body , would account for its various movements . Though Coper- nicus thus simplified so greatly the Ptolemaic the- ory , he yet found that the idea of circular ...
... motion of the earth about the sun , transferred in the same manner to that body , would account for its various movements . Though Coper- nicus thus simplified so greatly the Ptolemaic the- ory , he yet found that the idea of circular ...
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Common terms and phrases
ancients Andromeda angle aphelion appearance Aries astronomers atmosphere axis body Boötes bright brilliant Canis Minor Capricornus Cassiopeia celestial centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk Draco earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune node north pole orbit Orion parallax pass path penumbra perihelion Perseus Pisces planet Polaris precession rays revolve ring rising Saturn seasons seen shadow shines shower sidereal sidereal day solar day solar system space spots summer sun's superior planet surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible zodiac