On Feb 4, 2006, at 11:32 AM, Harry Veeder wrote:
In EM theory a body with some charge and with motion which is
initially
uniform and in a straight line will be deflected by the appearance
of a
magnetic field.
Yes, assuming of course you do not mean the charge's own field. This
deflection is caused by the analog to the Lorentz force. I would
replace "by the appearance of" with "in the presence of", since
fields do not just appear from nothing and without effect.
If the isomorphism between Gravity and EM holds, then a body with
some mass
with the same initial motion should be deflected by the appearance of
gravimagnetic field (not a gravity field) ,
Yes, again with the same caveats.
but it appears to be only true
if the body is initially rotating too.
No. The deflection can be due solely to the Lorentz force. However,
if the gravimagnetic field is not uniform, then a spinning body can
also be deflected by the gravimagnetic force. In a uniform
gravimagnetic field a spinning body, in motion or not with respect to
the gravimagnetic field, is only made to precess due to its
spinning. A spinning body is deflected by the Lorentz force just
like a non-spinning body.
Have I misunderstood the meaning of isomorphism or something about the
theory of gravimagnetism?
Your understanding of EM may be a bit off, if I understand your
questions.
Horace Heffner
