Fourteen Weeks in Descriptive Astronomy |
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Page 17
... earth is round , and that the moon receives her light from the sun . He introduced the division of the earth's surface into zones , and the theory of the obliquity of the ecliptic . He also predicted an eclipse of the sun which is ...
... earth is round , and that the moon receives her light from the sun . He introduced the division of the earth's surface into zones , and the theory of the obliquity of the ecliptic . He also predicted an eclipse of the sun which is ...
Page 20
... earth is the fixed centre around which the sun and the heavenly bodies move . They then conceived that a bar , or some- thing equivalent , is connected at one end with the earth ; that at some part of this bar the sun is at- tached ...
... earth is the fixed centre around which the sun and the heavenly bodies move . They then conceived that a bar , or some- thing equivalent , is connected at one end with the earth ; that at some part of this bar the sun is at- tached ...
Page 24
... earth once in twenty - four hours , the earth simply turns on its own axis : that this produces the apparent daily revolution of the sun and stars ; while the yearly motion of the earth about the sun , transferred in the same manner to ...
... earth once in twenty - four hours , the earth simply turns on its own axis : that this produces the apparent daily revolution of the sun and stars ; while the yearly motion of the earth about the sun , transferred in the same manner to ...
Page 29
... earth's time of revolu- tion by P , and her distance from the sun by p , then letting D and d represent the same in another planet , we have the proportion P2 : D2 :: p3 : d3 . Kepler , strangely enough , believed in the " Music of the ...
... earth's time of revolu- tion by P , and her distance from the sun by p , then letting D and d represent the same in another planet , we have the proportion P2 : D2 :: p3 : d3 . Kepler , strangely enough , believed in the " Music of the ...
Page 33
... earth bends it downward , just as it does the stone ? Newton knew that a stone falls toward the earth sixteen feet the first second . He imagined , after a careful study of Kepler's laws , that the attraction of the earth diminishes ...
... earth bends it downward , just as it does the stone ? Newton knew that a stone falls toward the earth sixteen feet the first second . He imagined , after a careful study of Kepler's laws , that the attraction of the earth diminishes ...
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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