“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 11
... equinoxes , the second shows the solstices ; and by dividing the ecliptic into four equal parts , they also designate the four seasons of the year . QUESTIONS . What is a great circle ? What are the poles of a great circle ? How many ...
... equinoxes , the second shows the solstices ; and by dividing the ecliptic into four equal parts , they also designate the four seasons of the year . QUESTIONS . What is a great circle ? What are the poles of a great circle ? How many ...
Page 15
... equinoxes . 8. The quadrant of altitude is a thin slip of brass divided upwards from 0 to 90 degrees ; and down- wards from 0 to 18 degrees , and , when used , is ge- nerally screwed to the brass meridian . The upper divisions are used ...
... equinoxes . 8. The quadrant of altitude is a thin slip of brass divided upwards from 0 to 90 degrees ; and down- wards from 0 to 18 degrees , and , when used , is ge- nerally screwed to the brass meridian . The upper divisions are used ...
Page 17
... equinox ; and the time when he is at the other equinoctial point , is called the autumnal equinox . The time when the sun is at the northern solstitial point , is called the summer solstice ; and the time when he is at the southern ...
... equinox ; and the time when he is at the other equinoctial point , is called the autumnal equinox . The time when the sun is at the northern solstitial point , is called the summer solstice ; and the time when he is at the southern ...
Page 31
... equinox mark the years , in the same manner as its returns to the meridian mark the days . The solar year is either astronomical or civil . 12. The astronomical solar year is that which is determined precisely by astronomical ...
... equinox mark the years , in the same manner as its returns to the meridian mark the days . The solar year is either astronomical or civil . 12. The astronomical solar year is that which is determined precisely by astronomical ...
Page 37
... equinoxes , but it is longer in an oblique sphere than in a right one ; because , in those cases the sun , by the obliquity of his path , is longer in ascending through 18 degrees of altitude . 19. Angle of position between two places ...
... equinoxes , but it is longer in an oblique sphere than in a right one ; because , in those cases the sun , by the obliquity of his path , is longer in ascending through 18 degrees of altitude . 19. Angle of position between two places ...
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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