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Originally Posted by Popular
Leo: Hi. Farsight here. I have a problem with rotation and the planck length. I can't quite put my finger on it, but maybe Boerseun's post applies. No block universes here please, those slices are slices of a length that's merely in your head.
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Hi Farsight/Popular. I raised the block universe thing only to show that the concept is not easily defendable, and is probably a child of cinematography and Lorentzian boost taken literally. Regarding rotation, Pauli rejected the notion of particle spin at the beginning because it implied superluminal velocities, but this is not what you have in mind, is it? If we assume that rotation is necessarily a product of at least two interacting elements, then what happens if the interactions are quantized? Is this what bugs you?
Quote:
Originally Posted by Popular
All: the point of all this is where it leads. Here's an example: you know spacetime curvature? Well, there isn't any. There can't be. There's no fundamental time, so the stuff out there is space not spacetime. The curvature is the path followed over the "course of time". It's the effect, not the cause. To find the cause you take the time derivative of the curvature. You get a gradient. A tension gradient called gravity, orthogonal to the stress of matter/energy. Voila, I give you the secrets of the universe toppling like dominoes right under your nose!  |
Yes, that's the scheme
R.L. Collins gets out of Newtonian gravity combined with relativistic mass/inertia/energy. Time dilation and Lorentz contraction follow nicely out of it. He doesn't seem to mention that they arise as naturally also for moving bodies in the absence of a gravity field. So yes, bendings and slants are probably just metaphors.
EDIT: I disagree with Collins' simplistic method for deriving Lorentz contraction, which leads to isotropic contraction. The directionality of gravity and/or motion has to be taken into account to explain the anisotropy of energy exchange and matter shape change. This doesn't invalidate Collins' general view though.
