|Does gravity have a magnetic counterpart?
electric charge and you get a
Spin any mass and, according to
you should get a very slight effect that acts
something like magnetism.
This effect is expected to be so small that
it is beyond practical experience and ground laboratory measurement.
In a bold attempt to directly measure
launched in 2004 the smoothest spheres ever manufactured into space to see
how they spin.
These four spheres, each roughly the size of a
are the key to the ultra-precise
at the core of
Gravity Probe B.
Last week, after accounting for persistent background signals,
the results were
the gyroscopes precessed at a rate consistent with the gravitational predictions of Einstein's
Theory of Relativity.
The results, which bolster existing findings, may have
untold long term benefits as well as shorter term benefits such as
better clocks and
global positioning trackers.
Gravity Probe B Team,