A Compendium of Astronomy: Intended to Simplify and Illustrate the Principles of the Science : and Give a Concise View of the Motions and Aspects of the Great Heavenly Luminaries : Adapted to the Use of Common Schools, as Well as Higher SeminariesCarter, Hendee & Company, 1832 - 180 pages |
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Page 23
... diameter . In most of them there is a very dark nucleus , surrounded by an umbra , or fainter shade . A distinct and well defined boundary intervenes between the umbra and nucleus . The part of the umbra nearest the dark nucleus is ...
... diameter . In most of them there is a very dark nucleus , surrounded by an umbra , or fainter shade . A distinct and well defined boundary intervenes between the umbra and nucleus . The part of the umbra nearest the dark nucleus is ...
Page 24
... diameter ? Its circumference ? How many times larger than the earth is the sun ? How long would a celestial courier , passing at the rate of 40 miles in a day , be in circumambulating the sun ? Would 240,000 miles , the distance of the ...
... diameter ? Its circumference ? How many times larger than the earth is the sun ? How long would a celestial courier , passing at the rate of 40 miles in a day , be in circumambulating the sun ? Would 240,000 miles , the distance of the ...
Page 26
... diameter of the sun as seen from Mercu- ry is 1 ° 22 ' . His mean distance from the sun is to that of the earth about as 4 to 10.3 . The intensity of the light and heat of the sun at Mercury must be about as 6.6 to 1 at the earth ...
... diameter of the sun as seen from Mercu- ry is 1 ° 22 ' . His mean distance from the sun is to that of the earth about as 4 to 10.3 . The intensity of the light and heat of the sun at Mercury must be about as 6.6 to 1 at the earth ...
Page 27
... Diameter , 3180 miles . Mean diameter as seen from the sun , 16 ′′ . Inclination of its orbit to the ecliptic , 7 ° 0 ' 1 " . Tropical revolution , 87 d . 23 h . 14 m . 33 s . Sidereal revolution , 87 d . 23 h . 15 m . 44 s . Hourly ...
... Diameter , 3180 miles . Mean diameter as seen from the sun , 16 ′′ . Inclination of its orbit to the ecliptic , 7 ° 0 ' 1 " . Tropical revolution , 87 d . 23 h . 14 m . 33 s . Sidereal revolution , 87 d . 23 h . 15 m . 44 s . Hourly ...
Page 30
... diameter of Venus from the cusp a . Fig . 3 represents the appearance of Venus with her blunt horn and rug- ged edge . ' Mr Schroeter , ' says Dr. Brewster , ' seems to have been very successful in his observations upon Venus ; but the ...
... diameter of Venus from the cusp a . Fig . 3 represents the appearance of Venus with her blunt horn and rug- ged edge . ' Mr Schroeter , ' says Dr. Brewster , ' seems to have been very successful in his observations upon Venus ; but the ...
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A Compendium of Astronomy; Intended to Simplify and Illustrate the ... John Vose No preview available - 2011 |
Common terms and phrases
ancient angle aphelion appear Aries ascending node Asteroids astronomers atmosphere attraction axis bissextile brazen meridian cause celestial centre comets commence computation conjunction constellations declination degree discovered disk diurnal rotation dominical letter east eclipses elevated Epact equal equator equinox fast of clock fixed stars full moon harvest moon heat heavenly body heavens hemisphere Herschel horizon hour immense inclination inferior planets inhabitants Jupiter latitude libration light longitude longitude for 100 luminary luminous lunar magnitude Mars Mean diameter Mean distance Mercury and Venus miles month move night obliquity observed opposite orbit parallax passing performs a revolution perihelion Plate polar circles poles primary planets rays reckoned refraction represented retrograde motion revolution round revolve right ascension rising round the earth round the sun satellites Saturn seen side sidereal slow of clock solar system spots Sun fast Sun slow sun's place superior conjunction telescope tides tion visible zenith