 | Science - 1818 - 458 pages
...6343 feet, is founded on these observations, of which it is the mean result, and on the idea, that the average height of the barometer, at the level of the sea, is about 30 inches ; which, from what I hav* «bserred within the tropics, is not, I believe, far from... | |
 | Great Britain - Boundaries - 1829 - 494 pages
...ascertained with tolerable accuracy, the height of such places above the level of the sea may be determined ; the average height of the barometer at the level of the sea having been ascertained by requisite observations in various places. In proportion as these circumstances... | |
 | Royal Geographical Society (Great Britain) - Geography - 1854 - 538 pages
...0_ ... ,. , ,„ Dftto lower MJ 80 = multiplier . 1-100 Correct altitude 15,763 Assuming 30 • 00 inches as the average height of the barometer at the...temperature of the stratum of air traversed by Table II. [Note. — Dr. Hooker finds that the index error of boiling point tfaermometers is often more than... | |
 | 1833 - 754 pages
...76 1 &Q = muhi Her j 1(x) Calcutta, . . 84 J ' — : Correct altitude, ft. 15763 3. Assuming 30.00 inches as the average height of the barometer at the...temperature of the stratum of air traversed, by table II. TABLB I. — To find the Barometrical Pressure and Elevation corresponding to any observed temperature... | |
 | Royal Geographical Society (Great Britain) - Geography - 1838 - 666 pages
...84° Temperature, upper station, 7l > 1 80_multiplier Correct altitude - - 15763 Assuming 30 • 00 inches as the average height of the barometer at the...station is at once obtained by inspection of Table 1 , correcting for temperature of the stratum of air traversed by Table 2. [Newman, Optician, 122,... | |
 | Edward Charles Frome - Mathematical geography - 1840 - 232 pages
...J Correct altitude . . . 15763 Assuming 30.00 inches as the average height of the barometer at ihe level of the sea (which is however too much), the...temperature of the stratum of air traversed by Table- II. CHAPTER IX. GEODESICAL OPERATIONS CONNECTED WITH A TRIGONOMETRICAL SURVEY. IN the words of Sir J. llerschel,... | |
 | Julian R. Jackson - Scientific expeditions - 1841 - 654 pages
...Temperature, upper station, 7J ) 80==multiplier , . 100 Correct altitude .... 15763 Assuming SO'OO inches as the average height of the barometer at the...temperature of the stratum of air traversed by table II. Newman, Optician, 122, Regent Street, has been in the habit of makiug these instruments ; he recommends... | |
 | Edward Charles Frome - Military topography - 1850 - 292 pages
...Ditto lower, 84 Mean temperature ... 80 Multiplier 1 Table 2. J True altitude 15763 Assuming 30'00 inches as the average height of the barometer at the...the upper station is at once obtained by inspection in Table I., correcting for temperature of the stratum of air traversed, by Table II. In moderate elevations,... | |
 | Sir Henry Edward Landor Thuillier - Surveying - 1851 - 826 pages
...14330 Temperature, J-PP- station, 7£ j 80=multiplicr> „„ Correct altitude 15763 Assuming 30-00 inches as the average height of the Barometer at the...temperature of the stratum of air traversed by Table II. CHAPTER XXIII. ON LEVELLING. . LEVELLING is the art of tracing a line at the surface of the earth,... | |
 | Horatio Nelson Robinson - History - 1853 - 334 pages
...to itself, that is, add 3.67. Height, in fathoms, - * 83.89 Multiply by 6 Height in feet, - - 503.34 The average height of the barometer, at the level of the sea, is 30.09 inches ; and now if we know the average height of the barometer at any other place, and the... | |
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SO'OO inches as the average height of the barometer at the level of the sea (which is however too much), the altitude of the upper station is at once obtained by inspection of Table I, correcting for temperature of the stratum of air traversed by table... 
