Fourteen Weeks in Descriptive Astronomy |
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Page 29
... falling bodies , as we have already learned in Natural Philosophy . He , however , was educated in and believed the Ptolemaic theory . A disciple of the Copernican theory hap- pening to come to Pisa , where Galileo was teaching * For ...
... falling bodies , as we have already learned in Natural Philosophy . He , however , was educated in and believed the Ptolemaic theory . A disciple of the Copernican theory hap- pening to come to Pisa , where Galileo was teaching * For ...
Page 31
... planets . Now , if we increase the number of planets , this whole system falls to the ground . " NEWTON . - As we have seen , the truth of the Co- pernican system was fully established by the discov- eries of HISTORY . 31.
... planets . Now , if we increase the number of planets , this whole system falls to the ground . " NEWTON . - As we have seen , the truth of the Co- pernican system was fully established by the discov- eries of HISTORY . 31.
Page 32
... fall to the ground near him . Reflecting upon the strange power that causes all bodies thus to descend to the earth , and remembering that this force continues , even when we ascend to the tops of high mountains , the thought occurred ...
... fall to the ground near him . Reflecting upon the strange power that causes all bodies thus to descend to the earth , and remembering that this force continues , even when we ascend to the tops of high mountains , the thought occurred ...
Page 33
... fall only four feet ; at 240,000 miles , or the distance of the moon , it would fall only about one - twentieth of an inch ( exactly .053 ) . Now the question arose , " How far does the moon fall toward the earth , i . e . , bend from a ...
... fall only four feet ; at 240,000 miles , or the distance of the moon , it would fall only about one - twentieth of an inch ( exactly .053 ) . Now the question arose , " How far does the moon fall toward the earth , i . e . , bend from a ...
Page 50
... falls 16 feet the first second ; at the sun's equator it would fall 437 feet . XTELESCOPIC APPEARANCE OF THE SUN : SUN - SPOTS.- We Te may sometimes examine the sun at early morning or late in the afternoon with the naked eye , and at ...
... falls 16 feet the first second ; at the sun's equator it would fall 437 feet . XTELESCOPIC APPEARANCE OF THE SUN : SUN - SPOTS.- We Te may sometimes examine the sun at early morning or late in the afternoon with the naked eye , and at ...
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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