4 ms·
There are no forces involved in Einstein's gravitation. You can see it as a pseudo-force (like Coriolis or centripetal) if you like, for practical (and mental s
by vibragiel 16y ago
There are no forces involved in Einstein's gravitation. You can see it as a pseudo-force (like Coriolis or centripetal) if you like, for practical (and mental sanity) reasons. But it's not a true force.
See "equivalence principle".
http://en.wikipedia.org/wiki/Equivalence_principle http://en.wikipedia.org/wiki/Equivalence_principle
- icegreentea 16y agoWhat happens if we ever detect a graviton? I never really understood this part. General relativity gives us one explanation of gravity (mass curves space-time), while quantum theory tells us that gravity arises from the exchange of particles. So... how do we reconcile? I imagine if we ever discover a unified theory, it'll manage to deal with that. But how does say string theory (for lack of other examples) reconcile these two views? ...or is it something as simple as the exchange of particles causes the warping of space >.>
- kscaldef 16y ago> quantum theory tells us that gravity arises from the exchange of particles No, it doesn't. That statement is wrong on two levels: 1) We don't have a confirmed quantum theory of gravity 2) In quantum field theories in general it's not really accurate to say that "[forces] arise from the exchange of particles". In some QFTs, in some situations, you can perform a perturbative expansion which maps onto the Feynman diagram view of particle exchange, but that's not universally possible. They really are quantum _field_ theories, not quantum particle theories.