Astronomical and Geographical Essaysauthor, 1789 - 665 páginas |
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Página 270
... SEMICIRCLE which paffes through that place ; these , therefore , may be called the geographical meridians . All places lying under the fame femicircle , are faid to have the fame meridian ; and the femicircle oppofite to it is called ...
... SEMICIRCLE which paffes through that place ; these , therefore , may be called the geographical meridians . All places lying under the fame femicircle , are faid to have the fame meridian ; and the femicircle oppofite to it is called ...
Página 373
... semi- circle which is oppofite to the hour femicircle . Thus fig . 2 , plate XII . fhews the hour lines drawn upon the plane of the horizon of London , with only fo many hours as are neceffary ; that is , thofe hours , during which the ...
... semi- circle which is oppofite to the hour femicircle . Thus fig . 2 , plate XII . fhews the hour lines drawn upon the plane of the horizon of London , with only fo many hours as are neceffary ; that is , thofe hours , during which the ...
Página 449
... semi- circle of the horizon , and observe what figns are in that part of the ecliptic above the horizon , then caft your eye upon the ephemeris for that month , and you will at once fee what planets poffefs any of those elevated figns ...
... semi- circle of the horizon , and observe what figns are in that part of the ecliptic above the horizon , then caft your eye upon the ephemeris for that month , and you will at once fee what planets poffefs any of those elevated figns ...
Página 653
... fun . Turn this last semicircle , till the fights are accurately directed to the fun . The nonius will fhew the time on the horary circle . This problem is more accurate than the fore- going , This OF THE QUADRANT , & c . 653.
... fun . Turn this last semicircle , till the fights are accurately directed to the fun . The nonius will fhew the time on the horary circle . This problem is more accurate than the fore- going , This OF THE QUADRANT , & c . 653.
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Términos y frases comunes
aftronomy alfo alſo apparent motion atmoſphere becauſe bodies braſs meridian broad paper circle called cauſes celeftial confequently conjunction decreaſe defcribe degrees diameter diftinguiſhed diſappear diſcovered diſtance diurnal motion earth eaſt ecliptic elongation equator faid fame fatellites feen fhadow fhew fhould fide figns firſt fituation fixed ftars fize folar fome fometimes fouth fouthern fpectator fuch fummer fun appears fun's fuperior fuppofe furface fyftem greateſt heavens hemifphere horizon increaſe inferior conjunction inferior planets inhabitants interfect itſelf Jupiter latitude lefs light London longitude meaſure Mercury miles moon moon's moſt move muſt night nodes obferved oppofite orbit paffes paffing parallax parallel phænomena pofition polar circle pole reaſon repreſent reſpect retrograde motion revolves round rife round the fun Saturn ſeen ſhall ſhe ſmall ſpace ſphere ſpots ſtars ſuppoſe ſyſtem teleſcope thefe theſe thofe thoſe tropic of Cancer univerfe uſed Venus viſible weft whofe