Re: ORIGINAL simple magnets question

[William Beaty <billb@ESKIMO.COM>]

On Fri, 25 Jun 1999, Leigh Palmer wrote:

> Well, here I see we meet a serious problem, perhaps the barrier to
> our efforts:
>
>  1. There is no such thing as an *almost* inertial reference frame.
>
>  2. Magnetism is *intrinsically* a relativistic effect. There is
>     never a justification for ignoring relativity when treating
>     questions of this sort. Purcell is a good source for teaching
>     E&M with this fact held constantly in view, as is Feynman.
>     (These two texts were published within a year of one another.)

I agree with both of these.  If we rotate the entire CERN accelerator,
locally each magnet assembly will seem to go in a straight line, but still
there *must* be some GR effects there too.

By number 2, I meant to avoid using electrons which go at 50% of C,
because there *might* be additional effects arising when the disk-magnet
rotates that fast.  Use 1 meter/sec instead, and only deal with the usual
electromagnetic relativity of moving, everyday-world magnet disks.


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