MadSci Network: Physics

Re: is there a point in the center of a rotating disc that is still?

Date: Fri Oct 15 09:05:41 1999
Posted By: John Link, MadSci Admin
Area of science: Physics
ID: 939925506.Ph

No, for various reasons which I discuss below:

1) Even if there were one single atom at the very center of the disk that single atom would, at a minimum, be spinning in space.

2) Due to the motion of energy (thermal motion) there will not be any one single atom (or molecule) at the exact center of the disk. A large number of atoms will be vibrating in and out of the very center.

3) The thermal motion itself is motion!!

John Link, MadSci Physicist

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