“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 13
... miles ; for in- stance , the mean diameter of the earth being , ( according to Dr. Adrain's computation , ) 7920 miles , and the circum- ference 24880 miles ; if a man of 6 feet high were to stand on the earth where the surface is ...
... miles ; for in- stance , the mean diameter of the earth being , ( according to Dr. Adrain's computation , ) 7920 miles , and the circum- ference 24880 miles ; if a man of 6 feet high were to stand on the earth where the surface is ...
Page 14
... 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 of the earth , pa- rallel to ...
... 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 of the earth , pa- rallel to ...
Page 49
... miles ; hence , a geographical mile is greater than an American , in the proportion of 60 : 691 , or of 1 : 1.15185 . It may be also remarked that an American mile is the same as an English mile , each containing 5280 American or Eng ...
... miles ; hence , a geographical mile is greater than an American , in the proportion of 60 : 691 , or of 1 : 1.15185 . It may be also remarked that an American mile is the same as an English mile , each containing 5280 American or Eng ...
Page 50
... American miles , as above . EXAMPLES . 1. What is the nearest distance between Albany and St. Louis ? Answer . The distance in degrees is 13 . 13 Cistance in degrees . 60 780 geographical miles . 13 distance in degrees . 69 117 78 1 49 ...
... American miles , as above . EXAMPLES . 1. What is the nearest distance between Albany and St. Louis ? Answer . The distance in degrees is 13 . 13 Cistance in degrees . 60 780 geographical miles . 13 distance in degrees . 69 117 78 1 49 ...
Page 51
... miles is 9240 , and the distance in American miles is 10643 3. What is the nearest distance between New . Haven , and Puebla , a considerable city in Mexico , situated on a plain elevated more than 1000 feet above the level of the sea ...
... miles is 9240 , and the distance in American miles is 10643 3. What is the nearest distance between New . Haven , and Puebla , a considerable city in Mexico , situated on a plain elevated more than 1000 feet above the level of the sea ...
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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