Hi guys,
Do we actually know what makes gravity?
I guess I understand the difference between Newton's approach (he describes it, predicts how it will behave, but does not explain it) and Einstein's (he actually offers an explanation on why it behaves as such through the curving of spacetime by mass).
But do we know *why* mass does attract mass that way? I've seen that trampoline example on Youtube, but I do not find it totally satisfying : while it does a really nice job helping to visually understand what happens, the balls actually move like they do because of Earth's gravity and the physical proprieties of the nylon cloth, so I feel I'm back to square one!
I've read up about quarks and energy, up to where my level of understanding could take me (admitly not far, not being schooled in physics), but yet I can't grasp what is the medium of that gravity force thing.
What makes two masses react when in presence of each other. What actual physical relationship is there between the two ? Why mass would "fall" in a spacetime curvature?
Just like we can observe and mesure different kind of wavelengths and particules and their physical effects, can we do the same with what occurs between two masses mutually attracting themselves?
From what I understand Einstein's offers a real good and coherent explanation through spacetime warping, but does not tell us *why* mass react that way to the curvature.
Anyway, that was the rambling of a non-math/physics guy trying to understand
Do we actually know what makes gravity?
I guess I understand the difference between Newton's approach (he describes it, predicts how it will behave, but does not explain it) and Einstein's (he actually offers an explanation on why it behaves as such through the curving of spacetime by mass).
But do we know *why* mass does attract mass that way? I've seen that trampoline example on Youtube, but I do not find it totally satisfying : while it does a really nice job helping to visually understand what happens, the balls actually move like they do because of Earth's gravity and the physical proprieties of the nylon cloth, so I feel I'm back to square one!
I've read up about quarks and energy, up to where my level of understanding could take me (admitly not far, not being schooled in physics), but yet I can't grasp what is the medium of that gravity force thing.
What makes two masses react when in presence of each other. What actual physical relationship is there between the two ? Why mass would "fall" in a spacetime curvature?
Just like we can observe and mesure different kind of wavelengths and particules and their physical effects, can we do the same with what occurs between two masses mutually attracting themselves?
From what I understand Einstein's offers a real good and coherent explanation through spacetime warping, but does not tell us *why* mass react that way to the curvature.
Anyway, that was the rambling of a non-math/physics guy trying to understand
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