Fourteen Weeks in Descriptive Astronomy |
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Page 27
... figure become . This figure is the ellipse . The two points F F are called the foci ( singular , focus ) . We can now under- stand Kepler's attempt , and the glorious triumph which crowned his seventeen years of unflagging toil . First ...
... figure become . This figure is the ellipse . The two points F F are called the foci ( singular , focus ) . We can now under- stand Kepler's attempt , and the glorious triumph which crowned his seventeen years of unflagging toil . First ...
Page 245
... figure is so perfect , that the stars may be easily recognized . The girdle is pointed out by Merach ( 6 ) , and two other stars which form a line slightly curving toward the right foot . The breast is denoted by a very delicate ...
... figure is so perfect , that the stars may be easily recognized . The girdle is pointed out by Merach ( 6 ) , and two other stars which form a line slightly curving toward the right foot . The breast is denoted by a very delicate ...
Page 251
... figure of a hunter assaulting Taurus . He has a sword in his belt , a club in his right hand , and the skin of a lion in his left . This is one of the most clearly defined and conspicuous constellations in the heavens . Principal stars ...
... figure of a hunter assaulting Taurus . He has a sword in his belt , a club in his right hand , and the skin of a lion in his left . This is one of the most clearly defined and conspicuous constellations in the heavens . Principal stars ...
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Common terms and phrases
ancients angle aphelion appear astronomers atmosphere axis bright brilliant called Capricornus Cassiopeia Celestial Sphere centre circle color comet conjunction constellation Cor Caroli dark density diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light longitude luminous lunar magnitude Mars mean distance measured Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune night node north pole obliquity observer orbit parallax pass path penumbra perihelion Perseus planet polar position rays revolve Right Ascension ring rotation satellites Saturn seasons seen shadow shine side sidereal sidereal day solar system space spots summer sun's superior planet supposed surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major varies velocity Venus vernal equinox visible zenith zodiac