Re: How do electrons move and why does it not classify as perpetual motion?

Hi,

Perpetual motion refers to a condition in which an object moves forever 
without the expenditure of any limited internal or external source of 
energy. For example, electrons in an atom or quarks in a nucleus are in a 
state of perpetual motion.

As well as being descriptive of motions beyond the scale of human 
lifetimes, for example in the phrase "the stars in perpetual motion 
wheeled overhead", the term is commonly used to refer to actual attempts 
to build machines which display this phenomenon. In the macroscopic 
world, perpetual motion is not possible, because the energy of a particle 
tends to randomly flow into its neighborhood, such that the original goal 
of producing an ordered work is lost.

I think, you should read a little about Perpetual motion. You can view 
this web page. 

  http://www.kilty.com/pmotion.htm#Section2


  Best Wishes