Lexic.us

Definition of Perpetual motion

1. Noun. Motion that continues indefinitely without any external source of energy; impossible in practice because of friction.

Definition of Perpetual motion

1. Noun. The motion of some hypothetical device that continues forever with no obvious input of energy in violation of the laws of thermodynamics. ¹

¹ Source: wiktionary.com

Lexicographical Neighbors of Perpetual Motion

Literary usage of Perpetual motion

Below you will find example usage of this term as found in modern and/or classical literature:

1. A History of European Thought in the Nineteenth Century by John Theodore Merz (1903)
"Perpetual or imply the same idea—viz., the impossibility of a impossible, perpetual motion. In one form or other this seems 1 The conception of a ..."

2. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, and General by Thomas Spencer Baynes (1888)
"Briefly, a perpetual motion usually means a machine which will ... There was a time when the problem of the perpetual motion was one worthy of the attention ..."

3. Transactions by Cambridge Philosophical Society (1830)
"On certain Conditions under which a perpetual motion is possible. ... IT is well known that perpetual motion is not possible with any laws of force with ..."

4. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"perpetual motion, literally, a device or mechanism capable of maintaining its own state of internal motion forever, without depending upon a supply of ..."

5. The Annual Register, Or, A View of the History, Politics, and Literature for by Edmund Burke (1764)
"... of a perpetual motion, and hence it is that fo little attention hath been ... that a perpetual motion involved no contradiction ; it appearing to me ..."

6. Problems of Science by Federigo Enriques (1914)
"perpetual motion. An impossibility even more absolute than squaring the circle seems to frustrate the desires of those who for centuries have been seeking ..."

7. Problems of Science by Federigo Enriques (1914)
"If the matter is considered in its broader aspect, the requirement of perpetual motion reveals itself as that of a particular relation between the dynamic ..."

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