PeterDonis's latest activity
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PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed.Because you're starting from premises that have nothing to do with the black hole scenario. You need to start fresh, from premises that... -
PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed.I'll comment separately on misconceptions about the "barn and ladder" scenario, but really it's off topic for this thread and discussion...
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PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed.There is no such thing as "the" now of any observer. I.e., for a wrong reason. The barn and ladder scenario has nothing to do with the...
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PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed.If you mean that relativity of simultaneity is involved in the "barn and ladder" scenario, yes, that's true. But relativity of...
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PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed."Now" is not a physical thing in relativity. It's a convention. Trying to think in terms of "now" will only get you very confused...
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PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed.That's true, and that's why I said that an evaporating black hole, which only lasts for a very, very, very, very, very long time, is...
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PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed.No. The five infinities I mentioned in the article aren't important for what we're discussing here. They're a more technical point that...
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PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed.True. But they can exist for a very, very, very, very, very long time. For example, the expected evaporation time by Hawking radiation...
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PeterDonis replied to the thread I I don't see how a black hole's event horizon can be crossed.There is. First, read this Insights article: https://www.physicsforums.com/insights/black-holes-really-exist/
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PeterDonis replied to the thread Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality.Reopening thread to reply. It means what relativity says it means. We're discussing physics here, not philosophy. Relativity of...
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PeterDonis replied to the thread Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality.Thread closed for moderation.
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PeterDonis replied to the thread Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality.It's a necessary implication of relativity. Relativity of simultaneity does not forbid the actual distribution of stress-energy in the...
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PeterDonis replied to the thread Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality.The same "property" would apply to correlations between observations made at the same time at different places--for example, in any test...
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PeterDonis replied to the thread Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality.This isn't saying that the past isn't real unless we have records of it. It's only saying that we can't evaluate predictions about...
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PeterDonis replied to the thread Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality.Yes, it does, thanks!