PeterDonis's latest activity
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PeterDonis reacted to A. Neumaier's post in the thread Graduate Understanding Barandes' microscopic theory of causality with
Like.
Possibly of interest: Albert, David Z. (2025) NOTES ON JACOB BARANDES’ VERSION OF QUANTUM MECHANICS. - Preprint... -
PeterDonis replied to the thread Undergrad Synchronizing clocks in an inertial frame if light is anisotropic.Terminology for things like this is problematic, because it invites confusion both ways. "KE relative to the detector" sounds like it's...
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PeterDonis replied to the thread Undergrad An invariant while crossing the horizon.Yes. No. The value of the metric parameter ##m## at that event is an invariant. It doesn't depend on any "point of view". No, we...
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PeterDonis replied to the thread Undergrad Synchronizing clocks in an inertial frame if light is anisotropic.I believe it depends on the Anderson parameter ##\kappa##, yes. If I've done the math right, a pair of Lorentz frame velocities ##v##...
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PeterDonis reacted to PAllen's post in the thread Undergrad Synchronizing clocks in an inertial frame if light is anisotropic with Like.
KE is dependent on relative velocity between detecter and particle. However, it not dependent on synchronization convention. It is, in...
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PeterDonis replied to the thread Undergrad An invariant while crossing the horizon.What thread? Please give a link. Yes, that's fine, although the specific value of ##\tau_1## has no meaning off of that observer's...
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PeterDonis reacted to javisot's post in the thread Undergrad I don't see how a black hole's event horizon can be crossed with Like.
Looking at the entire conversation, it's as simple as correcting you and explaining the standard solution. Personally, I usually use...
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PeterDonis reacted to Nugatory's post in the thread Undergrad I don't see how a black hole's event horizon can be crossed with Like.
This is a false dichotomy. For purposes of constructive discussion of special relativity, forty or so hours with Taylor and Wheeler’s...
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PeterDonis replied to the thread Undergrad I don't see how a black hole's event horizon can be crossed.The issue is not how to tell an assertion from a question. The issue is what questions you are asking and whether they are answerable...
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PeterDonis replied to the thread Undergrad I don't see how a black hole's event horizon can be crossed.If you're asking why relativity of simultaneity is not involved with what we're discussing in this thread, it's because whether or not...
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PeterDonis replied to the thread Undergrad I don't see how a black hole's event horizon can be crossed.I think you're misunderstanding my point. We all realize that you didn't understand when you made your OP to this thread that you were...
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PeterDonis replied to the thread Undergrad I don't see how a black hole's event horizon can be crossed.You missed the part where @Dale said not to propose a resolution of your own. Pretty much all of your OP, as quoted below, was proposing...
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PeterDonis replied to the thread Undergrad Question about discussions around quantum interpretations.Yes, but you aren't giving any references at all to any literature where this "perspective" is discussed. As I said, even in this...
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PeterDonis reacted to Herman Trivilino's post in the thread Undergrad I don't see how a black hole's event horizon can be crossed with Like.
It was actually Wolfgang Pauli who is famously credited for saying "that is not even wrong". It's not clear if he said it as a reaction...
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PeterDonis replied to the thread Undergrad I don't see how a black hole's event horizon can be crossed.That's good. Note that the paper answers your original question: see the answer to the first bullet at the top left of p. 2. (The reason...