Contributions to Our Knowledge of the Meteorology of the Arctic Regions Volume 1-5

Contributions to Our Knowledge of the Meteorology of the Arctic Regions Volume 1-5

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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. 1879 edition. Excerpt: ...distinctly visible the whole time, and being sometimes accompanied by a more or less perfect halo undergoing corresponding variations. " Another peculiarity observed in this winter was the rare occurrence of the aurora, and the extraordinary poorness of its display whenever it did make its appearance. It was almost invariably seen to the southward, . between an E.S.E and W.S.W. bearing, generally low', the stationary patches of it having a tendency to form an irregular arch, and not unfrequently with coruscations shooting towards the zenith. When more diffused, it still kept, in general, on the southern side of the zenith, but never exhibited any of those rapid and complicated movements observed in the course of the preceding winter, nor, indeed, any feature that renders it necessary to attempt a particular description. The electrometer was frequently tried by Mr. Fisher, at times when the state of the atmosphere appeared the most favourable, but always without any sensible effect being produced on the gold-leaf." "On the evening of April 24th, the thermometer being at + 6, some halos and parhelia appeared about the sun, which the annexed figure will best describe. This was the only phenomenon of the kind particularly worthy of notice that occurred during the spring. s. The sun 8 to 10 above the horizon. a, e. A horizontal circle of white light, passing through the sun and parhelia; upon this appeared at times a large white spot, exactly opposite to the sun in the heavens. f, g. Parhelia situated upon the inner halo f, i, g, of which the radius was 22 20'. h, i, I. Part of an inverted circle, touching the upper part of the halo f, 1', g, and sometimes assuming the form of a bow. b, c, d. An outer halo, much more...
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Product details

  • Paperback | 252 pages
  • 189 x 246 x 13mm | 458g
  • United States
  • English
  • black & white illustrations
  • 1236879783
  • 9781236879783