This doesn't limit the number of possible dimensions, Steak. Other math does that.
If gravity is proved to be propogate at
c, that means that it is explicitly not instantaneous. Brane-world theory suggests that some phenomena (like gravity) could take shortcuts through "rolled up" dimensions to get around the lightspeed limit. It also intimates, but doesn not outright state, that Einstein holds true for rolled up dimensions.
I'm curious as to whether the speed of gravity is constant (ie exactly
c) or if it is merely approaches the limit with the interval determined other factors.
Also, a limit to the speed of gravitational propogation also may prevent Alcubierre's "warp drive" from being possible (of course, some of its other requirements may render that impossible before gravity even comes into play).
From Eishtmo:
You just found this out?
The experiment only confirmed what is generally excepted my most physists anyway, so it's nothing new.
The whole point of such experiments is to try to find circumstances where the theory breaks. "generally accepted" things MUST be tested, else you're not performing science, you're adhering to religion.
Venom, had they shown a different result, I would not have laughed, I'd have wanted a deeper examination of the experiment, and repeats of the experiment. Finding a place where Einstein's theory breaks down would be the biggest news to date in the fields of cosmology and physics.
