Our universe being govern by 2 very different set of laws?

Question

From what I understood, general relativity is used to describe large objects, but the sub-atomic world is govern by quantum mechanics, and they both does not "agree" with each other, as it, its not possible to put both laws together.

I'd like to know what's the problem between these two laws we use today. Are they contradicting each other?

If so, then how does one universe being govern by two different law?

Thanks =)

Answer 1

look up string theory or m theory.... it unites the two... it also tells us there is alot more to the universe then we even have the capability of seeing, with machines or our naked eyes.

and it's not so much that they contradict each other... (before m or string theory) they just didn't mesh together very well.... what 'property' was true in one model, might not nessicarily hold true in the other...

Answer 2

The quantum theory of gravity is non-renormalizable, a fancy word which means it breaks down at really small distance scales / high energy levels. The theory we have today must be only an effective theory that works at low energies and large distances. String theory is an attempt to come up with underlying theory that explains both coherently. The problem is that it isn't terribly good at predicting phenomena at energies we can achieve experimentally.

Answer 3

This is where Grand Unification Theory comes in!

Answer 4

One of the "cutting edge" views of physics comes in the form of two related theories... string theory and M (or membrane) theory.  Without getting into too much detail, string theory implies that all matter and energy interact much like vibrating strings rather than moving particles.  This interaction can be used to explain the QM and GR duality.

I suggest you look up string theory (even Wiki has a decent article on it) and look up work by Dr. Michio Kaku.  Dr. Kaku has an incredible way of explain very complex things in much simpler lights.