History of perpetual motion machines | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-25

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/History_of_perpetual_motion_machines


00:00:29 1 History
00:00:37 1.1 Pre-19th century
00:03:17 1.2 Industrial Revolution
00:03:26 1.2.1 19th century
00:06:03 1.2.2 1900 to 1950
00:07:23 1.3 Modern era
00:07:31 1.3.1 1951 to 1980
00:11:23 1.3.2 1981 to 1999
00:12:05 1.3.3 2000s
00:14:38 2 See also



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SUMMARY
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The history of perpetual motion machines dates at least back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but modern theories of thermodynamics have shown that they are impossible. Despite this, many attempts have been made to construct such machines, continuing into modern times. Modern designers and proponents sometimes use other terms, such as "overunity", to describe their inventions.