NOUN
- a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy
How To Use perpetual motion machine In A Sentence
- You would need a perpetual motion machine to do it! Times, Sunday Times
- Building a perpetual motion machine would have been easier. Times, Sunday Times
- Just when this perpetual motion machine will run down is anyone's guess. Times, Sunday Times
- Aggreko looks increasingly like some sort of implausible perpetual motion machine. Times, Sunday Times
- In Thermodynamics, it is called a "Perpetual Motion Machine", one that delivers useful work output, which exceeds the intrinsic value (known as "exergy") of its energy input. China Stocks News and Analysis from Seeking Alpha
- Finally there are Class III impossibilities, which seem to violate all the known laws of physics, such as precognition and perpetual motion machines. Madison.com - top
- Physicist Donald Simanek talked about perpetual motion machines and other unworkable devices.
- a perpetual motion machine would have to be frictionless
- 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
