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revised Forward's frame-dragging accelerator
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comment Tensor equations in General Relativity
Indeed. What replaces a global coordinate system in GR is an atlas, which is a patchwork of coordinate systems with are glued to each other via homeomorphic biyections in a subset of their overlap regions
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awarded Popular Question
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comment Forward's frame-dragging accelerator
Actually that's the purpose of the question, it is right on the last line: "or you see other physical effects cropping up and destabilising the rotator?",.. ah but I forgot, you didn't read any of it. That's ok
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comment Forward's frame-dragging accelerator
oh! it seems you have an answer for the question then. That's good. Go and enlighten us how the z-pinch instability applies on this case
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comment Forward's frame-dragging accelerator
That's the electrostatic self-repulsion. But the magnetic force points opposite to that.. Now, I was thinking that you skipped right after reading a few lines, but now I confirm that you didn't read anything about the post :-)
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comment Forward's frame-dragging accelerator
oh my. The charge is there to counter the tensile stresses of the material as the angular velocities gets above the order of the speed of sound in the material
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comment Forward's frame-dragging accelerator
Field emission works with electrons pal. If you make the charge density positive by removing electrons, there are no electrons to emit. That's on the paragraph before the last line. That's how I know you couldn't bother to read the last paragraphs
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comment Forward's frame-dragging accelerator
Also, your comment about field emission shows that you couldn't bother yourself to read the last paragraphs. Tsk, tsk
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comment Forward's frame-dragging accelerator
I guess not all minds are inclined or interested in studying frame-dragging in the lab
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revised Forward's frame-dragging accelerator
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asked Forward's frame-dragging accelerator
Sep
25
asked Categorization of electromagnetic solitons?
Sep
25
revised Black Holes can't exist?
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Sep
21
comment Anti-matter repelled by gravity - is it a serious hypothesis?
I've been recently trying to find a reference for experimental data regarding photon gas degeneracy. Theoretically is expected to be 2 for two polarizations, but haven't found any paper comparing the equilibrium properties in an experiment. Do you what I should look?
Sep
18
revised Accumulated environmental damage to Hubble main mirror
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Sep
18
awarded Promoter
Sep
18
comment How is it possible to accelerate a neutron?
the waveguide would need another superposed RF oscillation that is synchronized with the gradient sections in order to exchange the spins in order to avoid them to diverge, unless that is what the systems designer wants
Sep
18
comment How is it possible to accelerate a neutron?
ah Stern-Gerlach is a good approach. Even a tiny gradient over a long waveguide could be good enough for focusing the neutron beam, even if not producing much longitudinal acceleration. You should write a paper about it @dmckee
Sep
18
comment What technology can result from such expensive experiment as undertaken in CERN?
It depends on how much disruption a given source can cause and how much of that disruption do you need in order to complicate things to the rogue party. Those isotopes take time to accumulate in adequate quantities, so is not obvious to me that is an unworkable idea
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