Observations Made at the Magnetical and Meteorological Observatory at St. Helena Printed by Order of Her Majesty's Government Volume 1

Observations Made at the Magnetical and Meteorological Observatory at St. Helena Printed by Order of Her Majesty's Government Volume 1

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1847 edition. Excerpt: ...at the seaside (corrected for the zero of its scale) 30-164 at 78, whence, if the standard barometer had been in the place of the portable, its mean height would have been (30'164'"'-0'O08 =) 30'156 at 78, or 30023 at 32. The mean height of the barometer in the Observatory, derived from the live years of observation with the standard, is 88285" when corrected to the standard of the Royal Society; and if we add to this (30023-28237 =) 1'786"" as due to the difference of level between the two stations (1765 9'25 = 1755'75 feet), we have 30071'" as the mean barometric height at 9 feet 3 inches above the mean level of the sea, on the Windward side of the island and in a free exposure; whence we may take 30'O8 in round numbers as corresponding to the sea-level." Aqueous vapour.-The mean elastic force of the aqueous vapour at the Observatory during the five years from 1841 to 1845, is 0470"'; the mean in the dilferent months varies from 0'559""', the maximum in March, to 04l1,"" the minimum in August; the must deduct = 0031, the correction of the zero of the scale on account range in different months was therefore O'l48"'. The variations of the elasticity of " In the table of the approximate mean annual pressures of the atmosphere in different latitudes deduced from Dr. Adolph Erman's barometric observations in the Atlantic and Pacific Oceans in both hemispheres, which 1 communicated to Lieut. Clerk, . (Phil. Trans. for 1846, p. 436), the mean annual barometric pressures corrected for gravity in the latitudes of 10, 15, and 20, are given as follows (St. Helena...show more

Product details

  • Paperback | 42 pages
  • 189 x 246 x 2mm | 95g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236843223
  • 9781236843227