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Perpetual Motion by Norman Rockwell
 

 

 

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Summary

Description
English: Cover of the October 1920 issue of Popular Science magazine, painted by American illustrator Norman Rockwell. It depicts an inventor working on a perpetual motion machine. The device shown is a "mass leverage" device, where the spherical weights on the right have more leverage than those on the left, supposedly creating a perpetual rotation, but there are a greater number of weights to the left, balancing the device.
Date October 1920(1920-10)
Source Downloaded 2009-06-29 from Popular Science magazine, Vol.97, No.4 (October 1920), Bonnier Corp. New York, ISSN 0161-7370, front cover on Google Books
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Public Domain in USA - published before 1923 in USA

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Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1923. See this page for further explanation.
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