Fourteen Weeks in Descriptive Astronomy |
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Page 17
... nearly to the con- fusion of tongues at the Tower of Babel . The Chaldeans divided the day into twelve hours , in- vented the sun - dial , and also discovered the " Saros " or " Chaldean Period , " which is the length of time in which ...
... nearly to the con- fusion of tongues at the Tower of Babel . The Chaldeans divided the day into twelve hours , in- vented the sun - dial , and also discovered the " Saros " or " Chaldean Period , " which is the length of time in which ...
Page 19
... nearly all the wisdom and learning of the world . Here flourished all the sciences and arts , under the patronage of munificent kings . At this school Ptol- emy , a Grecian , wrote his great work , the " Alma- gest , " which for ...
... nearly all the wisdom and learning of the world . Here flourished all the sciences and arts , under the patronage of munificent kings . At this school Ptol- emy , a Grecian , wrote his great work , the " Alma- gest , " which for ...
Page 33
... - ures to find how much the moon's path around the earth curves each second . He reached the result at last . It was nearly , but not quite exact . Disap- pointed , he laid aside his calculations . Repeatedly he HISTORY . 33.
... - ures to find how much the moon's path around the earth curves each second . He reached the result at last . It was nearly , but not quite exact . Disap- pointed , he laid aside his calculations . Repeatedly he HISTORY . 33.
Page 39
... nearly by the North Star , and every direction from that is reckoned South , and every direction toward that is reckoned North , however it may conflict with our ideas of the points of the compass . The Equinoxes are the points where ...
... nearly by the North Star , and every direction from that is reckoned South , and every direction toward that is reckoned North , however it may conflict with our ideas of the points of the compass . The Equinoxes are the points where ...
Page 46
... nearly 3,000,000 miles further from the sun in aphelion than in perihelion . As we attempt to locate the heavenly bodies in space , we are immediately startled by the enormous figures employed . The first number , 91,500,000 miles , is ...
... nearly 3,000,000 miles further from the sun in aphelion than in perihelion . As we attempt to locate the heavenly bodies in space , we are immediately startled by the enormous figures employed . The first number , 91,500,000 miles , is ...
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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