Fourteen Weeks Course in Descriptive Astronomy |
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Page 16
... tion of four planets and the moon , which must have occurred a century before the Flood . They have also the first record of an eclipse of the sun , which took place about two hundred and twenty years * after the Deluge . It is reported ...
... tion of four planets and the moon , which must have occurred a century before the Flood . They have also the first record of an eclipse of the sun , which took place about two hundred and twenty years * after the Deluge . It is reported ...
Page 23
... tion and diligent study of the heavens . THE COPERNICAN SYSTEM . - About the middle of the sixteenth century , Copernicus , breaking away from the theory of Ptolemy , which was still taught in all the institutions of learning in Europe ...
... tion and diligent study of the heavens . THE COPERNICAN SYSTEM . - About the middle of the sixteenth century , Copernicus , breaking away from the theory of Ptolemy , which was still taught in all the institutions of learning in Europe ...
Page 29
... 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 P : D ' :: p3 : ď3 . Kepler , strangely enough , believed in the " Music of the Spheres . " He made ...
... 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 P : D ' :: p3 : ď3 . Kepler , strangely enough , believed in the " Music of the Spheres . " He made ...
Page 34
... tion of that great central orb compels all the planets to revolve about it in elliptical orbits , and holds them with an irresistible power in their appointed paths . At last he announced this grand Law of Gravitation : EVERY PARTICLE ...
... tion of that great central orb compels all the planets to revolve about it in elliptical orbits , and holds them with an irresistible power in their appointed paths . At last he announced this grand Law of Gravitation : EVERY PARTICLE ...
Page 40
... tion of the Earth's Equator to its orbit , and is called the obliquity of the ecliptic . ( b ) The SUBORDINATE CIRCLES are Circles of Celestial Longitude , the Colures , and Parallels of Celestial Latitude . The Circles of Celestial ...
... tion of the Earth's Equator to its orbit , and is called the obliquity of the ecliptic . ( b ) The SUBORDINATE CIRCLES are Circles of Celestial Longitude , the Colures , and Parallels of Celestial Latitude . The Circles of Celestial ...
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Common terms and phrases
ancients aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause celestial Celestial Sphere 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 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 Polaris precession 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 Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac
Popular passages
Page 6 - One God, one law, one element, And one far-off divine event, To which the whole creation moves.
Page 129 - ... while the Earth remaineth seed-time and harvest, and cold and heat, and summer and winter, and day and night shall not cease.
Page 283 - That nothing walks with aimless feet ; That not one life shall be destroyed, Or cast as rubbish to the void, When God hath made the pile complete...
Page 289 - A solar day is the interval between two successive passages of the sun across the meridian of any place. If the earth were stationary in its orbit, the solar day would be of the same length as the sidereal ; but while the earth is turning around on its axis, it is going forward at the rate a'i 360° in a year, or about 1° per day.
Page 29 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Page 29 - If you forgive me, I rejoice ; if you are angry, I can bear it. The die is cast, the book is written, to be read either now or by posterity, I care not which. It may well wait a century for a reader, as God has waited six thousand years for an observer.
Page 192 - We see it as Columbus saw America from the shores of Spain. Its movements have been felt, trembling along the far-reaching line of our analysis, with a certainty hardly inferior to that of ocular demonstration.
Page 31 - Nature, such as the seven metals, &,c., which it were tedious to enumerate, we gather that the number of planets is necessarily seven. Moreover, the satellites are invisible to the naked eye, and therefore can exercise no influence over the earth, and therefore would be useless, and therefore do not exist.
Page 20 - All these facts were attempted to be accounted for by an incongruous system of " cycles and epicycles," as it is called. The advocates of this theory assumed that every planet revolves in a circle, and that the earth is the fixed centre around which the sun and the heavenly bodies move. They then conceived that a bar, or something equivalent, is connected at one end with the earth ; that at some part of this bar the sun is attached ; while between that and the earth, Venus is fastened — not to...
Page 206 - Threat'ning the world with famine, plague, and war ; To princes, death ; to kingdoms, many crosses ; To all estates, inevitable losses ; To herdsmen, rot ; to ploughmen, hapless seasons ; To sailors, storms ; to cities, civil treasons.