Fourteen Weeks in Descriptive Astronomy |
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Page 132
... appear about 4 ' less than the horizontal , and so distort the figure of the disk into an oval shape . The sun and moon often appear larger when near the horizon than when high in the sky . This is not caused by refraction , but is a ...
... appear about 4 ' less than the horizontal , and so distort the figure of the disk into an oval shape . The sun and moon often appear larger when near the horizon than when high in the sky . This is not caused by refraction , but is a ...
Page 208
... appear in every quarter of the heavens , and move in every conceivable direction . When first seen , the comet resembles a faint spot of light upon the dark background of the sky : as it approaches the sun the brightness increases , and ...
... appear in every quarter of the heavens , and move in every conceivable direction . When first seen , the comet resembles a faint spot of light upon the dark background of the sky : as it approaches the sun the brightness increases , and ...
Page 322
... appear flattened when near the horizon ? Why not when they are high in the heavens ? Why do they appear smaller in the latter case ? 133. What causes the hazy appearance of the heavenly bodies near the horizon ? What is the cause of ...
... appear flattened when near the horizon ? Why not when they are high in the heavens ? Why do they appear smaller in the latter case ? 133. What causes the hazy appearance of the heavenly bodies near the horizon ? What is the cause of ...
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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