NOUN
- motion that continues indefinitely without any external source of energy; impossible in practice because of friction
How To Use perpetual motion In A Sentence
- It really does look like a perpetual motion machine, doesn't it? Times, Sunday Times
- The everlasting is mankind the perpetual motion of the peaceful happiness.
- These atoms are in perpetual motion, but sometimes they swerve, and this swerve—what Lucretius called the "clinamen"—accounts not only for change in general but for the forms that develop in nature. How the Secular World Began
- The Dream of Perpetual Motion is plangent, tender and sui generis: a steampunk The Tempest with the grim and rippling beauty of a fairy tale. The Dream of Perpetual Motion: Summary and book reviews of The Dream of Perpetual Motion by Dexter Palmer.
- The free lunch is the economic equivalent of squared circles and perpetual motion, a favorite of cranks through the ages.
- a perpetual motion machine would have to be frictionless
- We're all in a state of perpetual motion in this office .Sentence dictionary
- We're all in a state of perpetual motion in this office .
- He is adamant that this is not a perpetual motion machine, and does not violate the law of conservation of momentum because different reference frames apply to the drive and the waves within it.
- Beside the central image of the city in the east wall, to which we will return momentarily, the heptagonal figure offers a perpetual motion machine by which to contemplate the interconnection of worldly and divine wisdom. Architecture and Memory: The Renaissance Studioli of Federico da Montefeltro
