Fourteen Weeks in Descriptive Astronomy |
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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 ...
Page 30
... , discovered a fourth star , and finally found that they were all rapidly revolving around Jupiter , each in its elliptical orbit , with its own rate of motion , and all accompanying the planet in its 30 INTRODUCTION .
... , discovered a fourth star , and finally found that they were all rapidly revolving around Jupiter , each in its elliptical orbit , with its own rate of motion , and all accompanying the planet in its 30 INTRODUCTION .
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause 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 full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined 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 night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac