Recent content by Physt

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    Do Photons Experience Time? Exploring Time Dilation & Redshift

    I've often heard the speed of light and time dilation related from the standpoint of a particle as being in constant motion at the speed of light with the vector rotated slightly off the temporal dimension and toward any combination of the three spatial dimensions. Does this mean photons...
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    Oscillating Isotopes: Semi-Stable/Stable Fission/Fusion?

    You can actually build structures like that by combining two different materials in the form of plasma and carefully controlling the ratio of the two along with the exposure time. Right. But if you can trigger decay and fusion so logically you can combine those two controls into a single...
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    Oscillating Isotopes: Semi-Stable/Stable Fission/Fusion?

    The goal would be a bunch of individual reactionary isotopes with shells (1-atom or 1-molecule thick all around - nowhere near 1mm all around) that can contain the reaction. At some point the forces exerted by the surrounding material has to play into it - even if it is a very very finite...
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    Oscillating Isotopes: Semi-Stable/Stable Fission/Fusion?

    It seems if you were trying to construct a metamaterial (kind of a bastardization there - since it seems it would be somewhere between a bunch of nanoparticles and a metamaterial) to have variable inertial mass exploiting the differences in different isotopes the bulk of the mass of the material...
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    Oscillating Isotopes: Semi-Stable/Stable Fission/Fusion?

    Beryllium and helium were just an example set from what you said to try to relate the idea (they'd probably make a pretty bad pair in the context of the question since they are both very low mass density on the scale of the overall compound required and the fact you would have to subtract a...
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    Oscillating Isotopes: Semi-Stable/Stable Fission/Fusion?

    I was thinking of "constrained" as a shell of some metal around them ("around" meaning the single beryllium isotope would be encased in a metal lattice and be driven into an unstable state to create the two hellium isotopes).
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    Oscillating Isotopes: Semi-Stable/Stable Fission/Fusion?

    But would they escape? If you had just split a beryllium atom inside a shell of magnetostrictive material (the force of the material squeezing down may be negligible compared to the force required to put the helium back together) the same energy levels that the beryllium had would be there if...
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    Oscillating Isotopes: Semi-Stable/Stable Fission/Fusion?

    What would happen if you could encase beryllium in a shell of a magnetostrictive alloy - when it decayed would the helium escape or would it be able to be squeezed back together?
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    Oscillating Isotopes: Semi-Stable/Stable Fission/Fusion?

    Are there any semi-stable or stable isotopes that can be made to oscillate between their self and their decay products? Specifically some kind of fission/fusion reaction where the decay is easily reversed with something like pressure (assuming the reversal is quick enough that the majority of...
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    Would a 4'x8'x1' piece of glass be able to contain 60psi?

    Thanks, I too dislike the English system, but if one were to buy a large sheet of glass in the US it would likely be a 4'x8' pane - same goes for layered glass/polycarbonate stacks - so figured I'd try to work around that.
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    Would a 4'x8'x1' piece of glass be able to contain 60psi?

    From all I've fathered thus far the thickness of the glass grows quite a bit relative to the length of the shortest dimension. ~30cm is my best guess thus far based on the calculators available online for curved surfaces at approximately 122cm across with a little more for the sake of it being...
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    Would a 4'x8'x1' piece of glass be able to contain 60psi?

    Preface: This isn't an actual project, just trying to get the design to be realistic for a 3D model in a video game. I know most pressure vessels are round and the overall shape of this one would be round, but it's very large (about half a football field large) so it would be composed of a...
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    Thickness of materials in space?

    Yeah, that's why I'm having a tough time finding any information on the subject. I've found online calculators for cylinders, domes, elliptical arcs, pretty much anything that isn't flat - but I'm wondering if you were to build a massive structure with 4'x8' panels as a relatively small portion...
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    Thickness of materials in space?

    How thick would a 4'x8' aluminum plate need to be to hold 1 atmosphere in space? What about a 4'x8' sheet of glass?
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    Hypothetical Galactic Navigation System Question

    Hypothetical question here. If someone were to develop a system for navigating the galaxy what would be the best way to determine a position and direction assuming no prior information about location (but access to things like star locations from our solar system's perspective). I'm assuming a...
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