An interesting article explaining how gravito-magnetic
currents can induce matter currents and vice
versa...kind of a neat tie-in to Einstein's claim that
electric, magnetic, gravitic and INERTIAL forces are
all interchangeable.
So by moving matter at high speeds or through various
patterns, you should be able to affect other
forces...as in gravity....
http://www.aip.org/enews/physnews/1996/split/pnu295-2.htm
A GRAVITOMAGNETIC FIELD , according to the theory of
general relativity, arises from moving matter (matter
currents) just as an ordinary magnetic field arises
from moving charges (electrical currents).
The analogy is so apt that the equations describing
this "magnetic" component of gravity can essentially
be adapted from Maxwell's equations for
electromagnetism by replacing the charge density with
the mass density and the charge current with the mass
current.
The rotating Earth, containing a lot of matter in
motion, is the source of such a very weak
gravitomagnetic force. Indeed, measuring this field is
one of the tasks of the upcoming Gravity Probe B a
satellite.
Near a rapidly rotating black hole the gravitomagnetic
force is much more potent and rivals the static
gravitational field in strength.
Stuart Shapiro of the University of Illinois
(shapiro@astro.physics.uiuc.edu) asserts that in
analogy with the Faraday effect, whereby a changing
magnetic force can induce electrical currents, a
changing gravitomagnetic force emanating from a
rapidly rotating black hole can induce matter currents
inside a nearby object---say, a neutron star spiraling
in toward the hole.
This induced vorticity will influence the spin of the
star, its internal structure, and its orbital motion.
These effects in turn might be discernible in
gravitational waves reaching the future LIGO and VIRGO
detectors on Earth.
(Phys.Rev. Lett., 18 November; figure available on
11/14 at http://www.aip.org/physnews/graphics .)
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