Fourteen Weeks in Descriptive Astronomy |
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Page 41
... called the Vernal Equinox . The place where the sun crosses the equinoctial in going South , which occurs about the 21st of September , is called the Autumnal Equinox . The Solstices are the two points of the ecliptic most distant from ...
... called the Vernal Equinox . The place where the sun crosses the equinoctial in going South , which occurs about the 21st of September , is called the Autumnal Equinox . The Solstices are the two points of the ecliptic most distant from ...
Page 42
... called Signs , to each of which a fanciful name is given . The following are the names of the Aries SIGNS OF THE ZODIAC . ၈ Libra ... Taurus ୪ Scorpio .. m Gemini .. П Sagittarius Cancer ... Capricornus . 13 L Aquarius .. my Pisces ...
... called Signs , to each of which a fanciful name is given . The following are the names of the Aries SIGNS OF THE ZODIAC . ၈ Libra ... Taurus ୪ Scorpio .. m Gemini .. П Sagittarius Cancer ... Capricornus . 13 L Aquarius .. my Pisces ...
Page 50
... on no account to be called in question . Scheiner , it is said , having reported to his superior that he had seen spots on the sun's face , was abruptly dis- missed with these remarks : " I have read Aristotle's THE SOLAR SYSTEM .
... on no account to be called in question . Scheiner , it is said , having reported to his superior that he had seen spots on the sun's face , was abruptly dis- missed with these remarks : " I have read Aristotle's THE SOLAR SYSTEM .
Page 53
... called the umbra , and around that a grayish portion styled the pe- numbra ( pene , almost , and um- bra , black ) .— Sometimes , how- ever , umbræ ap- pear without a penumbra , and vice versa . The umbra itself has generally a dense ...
... called the umbra , and around that a grayish portion styled the pe- numbra ( pene , almost , and um- bra , black ) .— Sometimes , how- ever , umbræ ap- pear without a penumbra , and vice versa . The umbra itself has generally a dense ...
Page 56
... called a synodic , and one from a around to a again is called a sidereal revolution . The spots apparently do not always move in straight lines . Sometimes their path curves toward MARCH . JUNE . SEPTEMBER Fig . 9 . the north , and ...
... called a synodic , and one from a around to a again is called a sidereal revolution . The spots apparently do not always move in straight lines . Sometimes their path curves toward MARCH . JUNE . SEPTEMBER Fig . 9 . the north , and ...
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Common terms and phrases
ancients Andromeda angle aphelion appearance Aries astronomers atmosphere axis body Boötes bright brilliant Canis Minor Capricornus Cassiopeia celestial centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk Draco earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune node north pole orbit Orion parallax pass path penumbra perihelion Perseus Pisces planet Polaris precession rays revolve ring rising Saturn seasons seen shadow shines shower sidereal sidereal day solar day solar system space spots summer sun's superior planet surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible zodiac