The story of the earth's atmosphere

Paperback | May 14, 2012

byDouglas Archibald

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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 Excerpt: ...compressed, the atoms have been pushed towards each other, and their speed has therefore been increased by this push. Consequently, a rise of temperature takes place. This is Poisson's law. In all these cases, no energy is lost or created. It is simply a transformation of motion into different " modes," from which it can be retransformed without sensible loss, though it is easier to transform motion into heat than heat into motion. Dr. Joule, of Manchester, was the first to determine the exact equivalence between what we term motion and heat. His corrected law may be stated thus: When a pound weight falling through 783 feet is arrested, as much heat will be developed as will raise one pound of water one degree above absolute zero.1 The converse is equally true. Here we see the true cause of the marvellous manifestations of energy in the movements of the atmosphere, the devastating hurricanes which overturn buildings and destroy ships, and the terrible tornadoes of America which have been known to carry solid objects like wooden church spires a distance of 15 miles and kill hundreds of people in the space of a few minutes. They are all due to the heat of the sun, which is converted into motion on the above scale. Charles's law, by which air expands by heat, and Poisson's, by which it cools by expansion under diminished pressure, have a very important bearing on the formation of clouds, rain, thunderstorms, tornadoes and tropical cyclones. When a mass of dry air, or air only containing a small proportion of vapour, rises, it cools at the rate of i F. for every 183 feet it ascends. This would be about i.6 in 300 feet, or about 5.2 in 1000 feet. The rate, however, at which the air is found by observation to remain cooler as we ascend in the atmosphere...

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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 Excerpt: ...compressed, the atoms have been pushed towards each other, and their speed has therefore been increased by this push. Consequent...

Format:PaperbackDimensions:44 pages, 9.69 × 7.44 × 0.09 inPublished:May 14, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:021789853X

ISBN - 13:9780217898539

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