bhobba's latest activity
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This isn't quite true. Light beams have pressure as well. Indeed, their stress-energy tensor, in the standard treatment, is traceless... -
FYI of recent progress "XENONnT now extends this legacy, lowering the solar-neutrino energy threshold to 17 keV."...
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It would be an explosion. The amount of gravity produced would be the least concern.
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They earn their name "ghost particle" :)
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It's difficult to do this since basically any amount of energy will kick the neutrino to relativistic speeds (##E\gtrsim m\lt...
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Regarding neutrino masses: it's worth noting that Neil Turok et al. (https://arxiv.org/abs/1803.08930) have proposed a cosmological...
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Wheeler once posited the notion of a geon, a ring of light held together by the gravity of its own field energy. Geons have never been...
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I think it's worth pointing out that light is analogous to gravitational waves, while gravity in the sense of the more-or-less static...
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Technically, yes, this is possible. My understanding is that it's considered extremely unlikely, because whatever mechanism makes the...
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No, they don't: Please don't post contradictory statements. Also, nonzero neutrino masses do not "suggest" that they do not travel at...
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Classically, fhe field equations for light and gravity are similar, yes; both of them have the basic form of a differential equation...
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That depends. It seems like your question is not specifically about any quantum aspects of light or gravity, but just about this: The...
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bhobba reacted to Dale's post in the thread High School I don't understand the Michelson–Morley experiment with
Like.
Oops, yes you are right. I got that backwards. Good catch, thank you. -
bhobba reacted to Pencilvester's post in the thread High School I don't understand the Michelson–Morley experiment with Like.
Could it be that “positive curvature” and “negative curvature” should be swapped in this example? I’m just thinking about the behavior...
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bhobba reacted to Ibix's post in the thread High School I don't understand the Michelson–Morley experiment with Like.
Light was, at the time, believed to be a wave travelling in a medium called the ether. Its speed would always be ##c## relative to the...