> I thought gravity was a disturbance in an electromagnetic field...
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> ???
There's no direct relationship between the two except probably at temperatures closer to the Big Bang than we can currently achieve. By curving space time a mass changes an electrical field (and bends light) - that's General Relativity - but the gravitation isn't affected by that.
The Wikipedia articles on gravitation and electromagnetism look pretty good.
Shane, I'm sure, will differ.
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-- Andy "It's a testament to ketchup that there can be no confusion."