PERPETUAL MOTION MACHINE
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Definitions
There is 1 meaning of the phrase
Perpetual Motion Machine.
Perpetual Motion Machine - as a 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
Example Sentences
"Scientists have been trying to create a perpetual motion machine for centuries."
"The concept of a perpetual motion machine violates the laws of thermodynamics."
"Many inventors have claimed to have built a perpetual motion machine, but all have been debunked."
"The idea of a perpetual motion machine is often used in science-fiction literature."
"A perpetual motion machine would revolutionize the energy industry if it were possible."
