The Cyclones of the Far East

The Cyclones of the Far East

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 edition. Excerpt: ...any considerable elevation of the barometer above said level can not be neglected. Unless great heights are in question we may assume that the decrease of atmospheric pressure is roughly 0.01 inch for every 10 feet (or about 1 millimeter per 11 meters) elevation. This amount is therefore to be subtracted from the tabular reading and the index arrow set accordingly. On board ship the elevation can never give rise to great errors, but the case may be very different with instruments installed on land. Unless the elevation is small the corresponding correction should be ascertained and applied. If this precaution were neglected a barocyclonometer at an elevation of 800 feet might cause considerable alarm by indicating a typhoon in close proximity (10 to 60 miles), when it should promise settled fair weather. (3) Third group--"Typhoon."--This group corresponds to "stormy weather" of the ordinary aneroid, because, the barometer being adjusted according to directions just given, the needle never moves into this section unless the instrument is under the influence of a typhoon less than 500 nautical miles distant. This section, the largest of all, is subdivided so as to make its parts correspond to the atmospheric pressures prevalent in the four zones, into which, as mentioned before, we consider the horizontal section of the lower portion of the typhoon divided. The corresponding divisions are lettered in accordance with these zones A, B, C, and D. (See PL I.) Zone A--Typhoon distant.--If the needle has reached this division and the barometer shows an inclination to fall we may be tolerably certain that the center of a typhoon is between 500 and 120 miles distant. The width of this zone is 4 millimeters (0.16 inch). Zone B--Typhoon...show more

Product details

  • Paperback | 150 pages
  • 189 x 246 x 8mm | 281g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236575067
  • 9781236575067