A perpetual motion machine is something that will keep spinning or moving (typically involves rotation, but not always) forever without the need to keep adding energy. These are typically viewed as something that will move forever that we can connect a generator to in order to obtain free infinate energy.
Because perpetual motion can not happen
No one, and no one ever will, since perpetual motion machines are a scientific impossibility.
That would have to be perpetual motion
No.
Neither first or second kind of perpetual motion machines can be constructed, beacuse their existence violates the first law of Thermodynamics
Perpetual Motion Roadshow was created in 2003.
Because perpetual motion can not happen
That question would really be tough to answer, because perpetual motion is not possible.
Perpetual Motion - album - was created on 2001-10-02.
Frenetic motion and perpetual motion.
Perpetual Motion - short story - was created in 1950-09.
Perpetual motion.
The cast of Perpetual Motion - 2003 includes: Gregory Madore
Perpetual Motion Machine - song - was created on 2009-07-17.
No one, and no one ever will, since perpetual motion machines are a scientific impossibility.
The Newton's cradle swings in perpetual motion.
Perpetual motion machines are theoretical only. No one has actually invented one. A perpetual motion machine would have to be able to provide its own source of energy to continue operating.