Re: Need help finding magnets for experiment...

After all the commentary, I now picture the following:

A point on any rotating disk sees an electric field

E' = E + Em

E is the electric field present at that point in the absence of 
rotation. Em is the electric field produced at the point by motion 
through the magnetic field.

Em arises from motion through the magnetic field as described by special 
relativity (SR). Equivalently, Em can be considered to arise from the 
Lorentz force v x B. That is, this field can be considered to be a 
physical law unto itself established by experiment. I would consider the 
SR approach to be more fundamental.

If the Lorentz force is considered to be a physical law, I think that it 
would be a basis for deriving SR.

In any case, line integrals of the inner product (E', ds) can be 
calculated to describe behavior of the Faraday disk.

Bill