Astronomical and Geographical Essaysauthor, 1789 - 665 páginas |
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Página 5
... suppose our observer placed at the center of the fun . In this fituation he will fee at one view all the heavens , which will appear to him perfectly spherical , and the stars as fo many lucid points in the concave furface of the sphere ...
... suppose our observer placed at the center of the fun . In this fituation he will fee at one view all the heavens , which will appear to him perfectly spherical , and the stars as fo many lucid points in the concave furface of the sphere ...
Página 86
... suppose , that as foon as the slightest hint fhould be given to the man , of the motion of the veffel , he would begin to form a new opinion , and conceive it to be more rational , that fo fmall a thing as the fhip should move , rather ...
... suppose , that as foon as the slightest hint fhould be given to the man , of the motion of the veffel , he would begin to form a new opinion , and conceive it to be more rational , that fo fmall a thing as the fhip should move , rather ...
Página 89
... suppose our earth to re- volve , while the outer part , or sphere , remains fixed ; but if the nut b be turned the contrary way , the sphere will move round the globe , the fame way as the heavens appear to move . Thus by this machine ...
... suppose our earth to re- volve , while the outer part , or sphere , remains fixed ; but if the nut b be turned the contrary way , the sphere will move round the globe , the fame way as the heavens appear to move . Thus by this machine ...
Página 95
... suppose the plane of the earth's equator to be extended all ways , as far as the heavens , it will mark there a circle , that will divide the hea- vens into two equal parts ; this circle is called sometimes the EQUINOCTIAL , fometimes ...
... suppose the plane of the earth's equator to be extended all ways , as far as the heavens , it will mark there a circle , that will divide the hea- vens into two equal parts ; this circle is called sometimes the EQUINOCTIAL , fometimes ...
Página 141
... suppose the earth to be at rest at A , fig . 2 , plate VII . and correct this fuppofition afterwards , by fhewing that the apparent motion of Venus , or Mercury , feen from the earth , is the fame in this refpect , whether the earth ...
... suppose the earth to be at rest at A , fig . 2 , plate VII . and correct this fuppofition afterwards , by fhewing that the apparent motion of Venus , or Mercury , feen from the earth , is the fame in this refpect , whether the earth ...
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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