Fourteen Weeks in Descriptive Astronomy |
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Page 13
... Observer.— The great dome of the sky filled with glittering stars is one of the most sublime spectacles in nature . To enjoy this fully , a night must be chosen when the air is clear , and the moon is absent . We then gaze upon a deep ...
... Observer.— The great dome of the sky filled with glittering stars is one of the most sublime spectacles in nature . To enjoy this fully , a night must be chosen when the air is clear , and the moon is absent . We then gaze upon a deep ...
Page 29
... observer . ” + Galileo . - Contemporary with Kepler was the great Florentine philosopher , Galileo . He discovered the laws of the pendulum and of falling bodies , as we have already learned in Natural Philosophy . He , however , was ...
... observer . ” + Galileo . - Contemporary with Kepler was the great Florentine philosopher , Galileo . He discovered the laws of the pendulum and of falling bodies , as we have already learned in Natural Philosophy . He , however , was ...
Page 55
... observer is changed ; allowing for this , the sun's time of rotation is about twenty- five days ( 25 d . , 8 h . , 10 m .: Langier . ) X b S SYNODIC AND SIDEREAL REVOLUTION . X Synodic and sidereal revolution of the spots . - We can ...
... observer is changed ; allowing for this , the sun's time of rotation is about twenty- five days ( 25 d . , 8 h . , 10 m .: Langier . ) X b S SYNODIC AND SIDEREAL REVOLUTION . X Synodic and sidereal revolution of the spots . - We can ...
Page 61
... observers apply other descriptive terms , such as " rice grains , " " untidy circular masses , " " things twice as long as broad , " " granules , " etc. The ac- companying cut represents the willow - leafed struc- ture of the luminous ...
... observers apply other descriptive terms , such as " rice grains , " " untidy circular masses , " " things twice as long as broad , " " granules , " etc. The ac- companying cut represents the willow - leafed struc- ture of the luminous ...
Page 75
... observer at the sun all the motions would be real , while to us many are only apparent . The position of a planet , as seen from the centre of the sun , is called its heliocentric place ; as seen from the centre of the earth , its ...
... observer at the sun all the motions would be real , while to us many are only apparent . The position of a planet , as seen from the centre of the sun , is called its heliocentric place ; as seen from the centre of the earth , its ...
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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