Fourteen Weeks in Descriptive Astronomy |
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Page 38
... Equator , or the earth's equator , ex- tended to the Celestial Sphere . ( b ) SUBORDINATE CIRCLES . - These are the Hour Circles ( Right Ascension Meridians ) and the Decli- nation Parallels . The Hour Circles are thus lo- cated . The ...
... Equator , or the earth's equator , ex- tended to the Celestial Sphere . ( b ) SUBORDINATE CIRCLES . - These are the Hour Circles ( Right Ascension Meridians ) and the Decli- nation Parallels . The Hour Circles are thus lo- cated . The ...
Page 40
... Equator to its orbit , and is called the obliquity of the ecliptic . • ( b ) The SUBORDINATE CIRCLES are Circles of Celestial Longitude , the Colures , and Parallels of Celestial Latitude . The Circles of Celestial Longitude are now ...
... Equator to its orbit , and is called the obliquity of the ecliptic . • ( b ) The SUBORDINATE CIRCLES are Circles of Celestial Longitude , the Colures , and Parallels of Celestial Latitude . The Circles of Celestial Longitude are now ...
Page 41
... Equator ; or they may be con- sidered to mark the sun's furthest declination , North and South of the equinoctial . The Summer Sol- stice occurs about the 22d of June ; the Winter Sol- stice occurs about the 22d of December . ( d ) The ...
... Equator ; or they may be con- sidered to mark the sun's furthest declination , North and South of the equinoctial . The Summer Sol- stice occurs about the 22d of June ; the Winter Sol- stice occurs about the 22d of December . ( d ) The ...
Page 50
... equator 150 lbs . , at the sun's equator would weigh about 4,080 lbs . , a force of attraction that would inevitably and instantly crush him . At the earth's equator a stone falls 16 feet the first second ; at the sun's equator it would ...
... equator 150 lbs . , at the sun's equator would weigh about 4,080 lbs . , a force of attraction that would inevitably and instantly crush him . At the earth's equator a stone falls 16 feet the first second ; at the sun's equator it would ...
Page 52
... equator , within not less than 8 ° nor more than 35 ° of latitude . They seem to herd together - the length of the straggling group being generally par- allel to the equator . " The size of the spots . It is not uncommon to find a spot ...
... equator , within not less than 8 ° nor more than 35 ° of latitude . They seem to herd together - the length of the straggling group being generally par- allel to the equator . " The size of the spots . It is not uncommon to find a spot ...
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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