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. 1832 Excerpt: ... rarefied by the sun's heat, meets this wind from the east, which, coming from the sea, is at that season comparatively cool. The meeting would be that of two currents of cool air, a circumst...
Paperback: 124 pages
Publisher: RareBooksClub.com (May 20, 2012)
Product Dimensions: 7.4 x 0.3 x 9.7 inches
Format: PDF ePub Text djvu book
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ss favorable to the production of a thunder storm than the concourse of a hot current with a cold. If we suppose the northerly wind to meet with a wind from every other quarter of the heavens in succession, we shall find each less favorable for the generation of a storm than that from the south-west. A sudden influx, however, of cold air from the ocean, mixing with the hotter air over the land, produces those occasional easterly thunder storms before mentioned. Art. 770, (3.) Storms of this kind sometimes occur in the morning. 776. In volcanoes, the most vivid lightnings and the heaviest thunders are produced, because here an immense quantity of heated vapor is thrown out, which on reaching the cold regions of the atmosphere is suddenly condensed into thick clouds; and the same phenomena are often terrific in water spouts, because here the sudden formation of clouds and rain, occasions a vast evolution of electricity. Violent thunder storms sometimes fall upon the sides of mountains or upon the surface of the sea, for here, on account of the proximity of the clouds, the discharges are made towards the earth or sea, which, in ordinary cases, are made from cloud to cloud. 777. All the foregoing facts appear to admit of a clear explanation, in conformity with the supposition, that the storm itself, including all the phenomena except the electrical, is produced like other storms of wind and rain, by the sudden cooling of heated air charged with watery vapor, (Art. 570.) and that the electrical phenomena are produced by the condensation of the vapor itself into cl...