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Scientific American Supplement, No. 363 (Dec 16, 1882)

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Author: Various Authors
Published: 1882
Language: English
Wordcount: 38,793 / 121 pg
Flesch-Kincaid Reading Ease: 52
LoC Categories: AP, Q
Downloads: 607
mnybks.net#: 357
Origin: gutenberg.org
Genre: Periodical
Excerpt

in repeating and extending these experiments, being satisfied that the grand agents of nature are, by the Creator's fiat, _indestructible_, and that wherever mechanical force is expended, an exact equivalent of heat is always obtained."

This was the first determination of the dynamical equivalent of heat. Other naturalists and experimenters about the same time were attempting to compare the quantity of heat produced under certain circumstances with the quantity of work expended in producing it; and results and deductions (some of them very remarkable) were given by Séguin (1839), Mayer (1842), Colding (1843), founded partly on experiment, and partly on a kind of metaphysical reasoning. It was Joule, however, who first definitely proposed the problem of determining the relation between heat produced and work done in any mechanical action, and solved the problem directly.

It is not to be supposed that Joule's discovery and the results of his investigation met with immediate attention or with read

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Chadwick Wall has written for the New Orleans Times-Picayune, the Sewanee Purple, the Riverside Reader, the Baton Rouge Advocate, and most recently Austin.com. After years living in many cities and regions, he counts himself lucky enough to reside in the laid-back yet vibrant, friendly and creative city of Austin. Here he spends many of his days and nights either holed up like a hermit, reading or writing away-or prowling around, investigating all of the live music, delicious cuisine, and cultural hotspots he can find. As our Author of the Day, Chad tells us all about his latest book, The Second Cortez.
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