“The” New American Grammar Of The Elements Of Astronomy, On An Improved Plan: In Three Books. I. The Use Of The Terrestrial Globe In The Solution Of Geographical And Astronomical Problems II. The Use Of The Celestial Globe ... III. The Solar System, And The Firmament Of Fixed Stars ; The Whole Systematically Arranged and Scientifically Illustrated ; With Severeal Cuts And Engravings ; And Adapted To The Instruction Of Youth In Schools And AcademiesCollins And Hannay. No. 230 Pearl-street, 1831 - 375 pages |
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Page 9
... observe that , when the sun enters the signs Aries or Libra , his declination is nothing . 10. The meridians are great circles passing through the poles , and cutting the equator at right angles . Every place upon the earth is supposed ...
... observe that , when the sun enters the signs Aries or Libra , his declination is nothing . 10. The meridians are great circles passing through the poles , and cutting the equator at right angles . Every place upon the earth is supposed ...
Page 14
... observed . The sixth circle contains the days of the month answering to each degree of the sun's place in the ecliptic . The seventh circle contains the equation of time , or the difference of time , shown by a well regulated clock and ...
... observed . The sixth circle contains the days of the month answering to each degree of the sun's place in the ecliptic . The seventh circle contains the equation of time , or the difference of time , shown by a well regulated clock and ...
Page 16
... observe , that the needle does not always point directly north , and that it is also subject to a small variation : its deviation from the north point of the horizon is called its declination ; and the change of its declination , is ...
... observe , that the needle does not always point directly north , and that it is also subject to a small variation : its deviation from the north point of the horizon is called its declination ; and the change of its declination , is ...
Page 20
... observed , that the true latitude of a place , as defined in the preceding article , would be equal to the re- duced latitude of the same place , if the figure of the earth were truly spherical . The difference between the true and ...
... observed , that the true latitude of a place , as defined in the preceding article , would be equal to the re- duced latitude of the same place , if the figure of the earth were truly spherical . The difference between the true and ...
Page 21
... observed , make their first meridian pass over London , or rather over Greenwich , on account of the observatory ... observe , that the greatest lon- gitude a place can have , is 180 degrees ; and that the longitude of any place ...
... observed , make their first meridian pass over London , or rather over Greenwich , on account of the observatory ... observe , that the greatest lon- gitude a place can have , is 180 degrees ; and that the longitude of any place ...
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Common terms and phrases
American miles analemma angle aphelion apparent diameter appear Arcturus Aries astronomers axis azimuth body brazen meridian bring the given called celestial globe centre climate comet constellation days and nights difference diurnal motion earth east ecliptic equal equator equinoctial point equinox fixed stars given place globe westward greatest heavens heliacally hemisphere Hence Herschel horizon hour circle inferior conjunction inferior planets inhabitants Jupiter latitude length longest day longitude Mars mean distance Mercury meridian altitude minutes moon nearly New-York node noon north or south north pole number of degrees o'clock oblique observed orbit parallax parallel of latitude passing perihelion polar circles principal stars Prob quadrant of altitude Rectify the globe remarkable stars retrograde revolution right ascension rising and setting satellites Saturn set the index sidereal solar south pole sun's declination sun's place superior planet supposed surface telescope terrestrial globe tion tude turn the globe twilight Venus zenith zone