“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 5
... nearly to a circle , round its shorter axis or conju- gate diameter , ) shall be explained in a subsequent part of this work ; but here the figure of the earth is supposed to be a perfect sphere , since there is no other figure which ...
... nearly to a circle , round its shorter axis or conju- gate diameter , ) shall be explained in a subsequent part of this work ; but here the figure of the earth is supposed to be a perfect sphere , since there is no other figure which ...
Page 9
... nearly a degree , ) in a day . ৭. The division of the signs commences at the first point of Aries , which is one of the equinoctial points , and they are numbered according to the sun's apparent motion in the ecliptic . 9. The names of ...
... nearly a degree , ) in a day . ৭. The division of the signs commences at the first point of Aries , which is one of the equinoctial points , and they are numbered according to the sun's apparent motion in the ecliptic . 9. The names of ...
Page 13
... nearly . Thus , 7920 miles is equal to 41817600 feet , to which add 6 feet , and the sum will be 41817606 , this multiplied by 6 , gives 250905686 ; then by extracting the square root of this last number , we shall find 2 15840 very ...
... nearly . Thus , 7920 miles is equal to 41817600 feet , to which add 6 feet , and the sum will be 41817606 , this multiplied by 6 , gives 250905686 ; then by extracting the square root of this last number , we shall find 2 15840 very ...
Page 14
... nearly ; which is equal to 3 miles , the distance which a man 6 feet high can see straight forward , admitting there is nothing to intercept his view . 4. The rational , or true horizon , is an imaginary plane passing through the centre ...
... nearly ; which is equal to 3 miles , the distance which a man 6 feet high can see straight forward , admitting there is nothing to intercept his view . 4. The rational , or true horizon , is an imaginary plane passing through the centre ...
Page 28
... nearly , we are not however to infer that the difference between the mean solar day and true solar day , is equal to the same ; for , in fact , they are nearly equal at that time , as may be readily seen from the Nautical Almanac for ...
... nearly , we are not however to infer that the difference between the mean solar day and true solar day , is equal to the same ; for , in fact , they are nearly equal at that time , as may be readily seen from the Nautical Almanac for ...
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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