High-school AstronomySheldon & Company, 1872 |
From inside the book
Results 1-5 of 16
Page 8
... March .... 177 " April , May , and June .... 180 66 July , August , and September ... 183 III - DOUBLE , Variable , and TEMPORARY STARS , & c . Stars Optically and Physically Double .... Binary Systems ... Variable or Periodical Stars ...
... March .... 177 " April , May , and June .... 180 66 July , August , and September ... 183 III - DOUBLE , Variable , and TEMPORARY STARS , & c . Stars Optically and Physically Double .... Binary Systems ... Variable or Periodical Stars ...
Page 24
... March , reaching the Northern Tropic on the 21st of June , crossing the Equator southward on the 23d of September , and reaching the Southern Tropic again on the 23d of December . In this manner he seems to cross and recross the Equator ...
... March , reaching the Northern Tropic on the 21st of June , crossing the Equator southward on the 23d of September , and reaching the Southern Tropic again on the 23d of December . In this manner he seems to cross and recross the Equator ...
Page 64
... MARCH 20 JUNE MAY W * Let a person walk around a tree , for instance , at a short distance from it , and it will appear to sweep around the horizon in an opposite direction . So as the earth revolves annually about the sun , the sun ...
... MARCH 20 JUNE MAY W * Let a person walk around a tree , for instance , at a short distance from it , and it will appear to sweep around the horizon in an opposite direction . So as the earth revolves annually about the sun , the sun ...
Page 67
... March ( the sun beginning then to decline northward ) , on account of which it is called the vernal equinox ; and the other on the 23d of September , on account of which it is called the autumnal equinox . ( See the earth at A and B ...
... March ( the sun beginning then to decline northward ) , on account of which it is called the vernal equinox ; and the other on the 23d of September , on account of which it is called the autumnal equinox . ( See the earth at A and B ...
Page 68
... March , and reaches his Summer Solstice again on the 21st of June . In this manner he conti . vies to deck . e , drst north and then south of the equato from year to var . But it should not he forgotter tha the sun does not really move ...
... March , and reaches his Summer Solstice again on the 21st of June . In this manner he conti . vies to deck . e , drst north and then south of the equato from year to var . But it should not he forgotter tha the sun does not really move ...
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Common terms and phrases
angle angular aphelion apparent magnitude appear Asteroids astronomers atmosphere attraction axis bodies called cause celestial Celestial Longitude circle comets concave constellations diameter difference direction disk distance earth earth's orbit east eastward ecliptic equator equinoctial equinox exterior planets figure fixed stars full moon globe heavens hemisphere Illustrate by diagram inclination Jupiter length libration light and heat longitude lunar Mars Mercury meridian minutes moon moon's orbit motion naked eye nearly nebulous Neptune nodes o'clock objects observations opposite pass perihelion planetary planets pole principal stars Prof refracting telescope refraction Remark represent respect retrograde revolve right ascension rings satellites Saturn seasons seen shadow shown side sidereal revolution solar day solar eclipse solar system sphere spots student sun and moon sun's supposed surface symbol synodic revolution tails telescope tide-wave tides tion transit Uranus velocity Venus vernal equinox visible zodiac zodiacal light
Popular passages
Page 168 - He telleth the number of the stars, and calleth them all by their names.
Page 10 - And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years: And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.
Page 173 - Canst thou bind the sweet influences of Pleiades, or loose the bands of Orion? Canst thou bring forth Mazzaroth in his season? or canst thou guide Arcturus with his sons?
Page 10 - And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.
Page 170 - Lo, these are parts of his ways; but how little a portion is heard of him? but the thunder of his power who can understand?
Page 200 - ... thousand stars, compacted and wedged together in a round space, whose angular diameter does not exceed eight or ten minutes; that is to say, in an area not more than a tenth part of that covered by the moon.
Page 66 - The inclination of the Earth's axis to the plane of the ecliptic causes the equinoctial to depart 23° 28
Page 21 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.