Fourteen Weeks in Descriptive Astronomy |
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Page 160
... lunar nodes in about the same time . Hence , in that period the sun and moon and the nodes will be in nearly the same rela- tive position . If , then , we reckon 18 yr . 10 da . from any eclipse , we shall find the time of its ...
... lunar nodes in about the same time . Hence , in that period the sun and moon and the nodes will be in nearly the same rela- tive position . If , then , we reckon 18 yr . 10 da . from any eclipse , we shall find the time of its ...
Page 161
... year it is of the lunar cycle , then refer to the corresponding year of * A tropical year is the interval between two successive returns of the sun to the vernal equinox . the preceding cycle , and the day will be the ECLIPSES . 161.
... year it is of the lunar cycle , then refer to the corresponding year of * A tropical year is the interval between two successive returns of the sun to the vernal equinox . the preceding cycle , and the day will be the ECLIPSES . 161.
Page 162
... lunar cycle . Seven is the golden number for 1868 . ECLIPSE OF THE MOON . - This is caused by the passing of the moon into the shadow of the earth , Fig . 52 . K ECLIPSE OF THE MOON . and hence can take place only at full moon - oppo ...
... lunar cycle . Seven is the golden number for 1868 . ECLIPSE OF THE MOON . - This is caused by the passing of the moon into the shadow of the earth , Fig . 52 . K ECLIPSE OF THE MOON . and hence can take place only at full moon - oppo ...
Page 163
... lunar ecliptic limit is only about 12 ° ; yet they are more frequently seen by us , ( 1 ) because each one is visible over the entire unillumined hemisphere of the earth , and also ( 2 ) because by the diurnal ro- tation during the long ...
... lunar ecliptic limit is only about 12 ° ; yet they are more frequently seen by us , ( 1 ) because each one is visible over the entire unillumined hemisphere of the earth , and also ( 2 ) because by the diurnal ro- tation during the long ...
Page 166
... lunar tide occur simultaneously , and high - water is the difference between the lunar and solar tides . We should bear in mind the philosophical truth , that the tide in the open sea does not consist of a progressive movement of the ...
... lunar tide occur simultaneously , and high - water is the difference between the lunar and solar tides . We should bear in mind the philosophical truth , that the tide in the open sea does not consist of a progressive movement of the ...
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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