Nugatory's latest activity
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Nugatory replied to the thread I Prof Mike Wiest's proposed link between quantum and consciousness.It is not impossible that more years (decades?) of AI development will lead to conscious physical systems In which the underlying... -
Nugatory replied to the thread I Synchronizing clocks in an inertial frame if light is anisotropic.If it is at rest in the center of mass frame and we have arranged for a fully inelastic collision to happen inside it?
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Nugatory replied to the thread I An invariant while crossing the horizon.This is tricky even without introducing the complexities of an evaporating black hole. "Crosses the horizon at a finite proper time...
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Nugatory replied to the thread I I don't see how a black hole's event horizon can be crossed.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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Nugatory replied to the thread I I don't see how a black hole's event horizon can be crossed.The equivalence principle says that sitting in a box at rest on the surface of a gravitating body (for example, in a closed room on the...
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Nugatory replied to the thread I How Is Intrinsic Curvature Measured in Higher Dimensions Like 4D Spacetime?.When @geordief wrote that he was still under the misunderstanding that “I think parallel transport relies on these tangent planes [that...
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Nugatory replied to the thread I Synchronizing clocks in an inertial frame if light is anisotropic.Does that force us to deal with clock synchronization? Start with a source of light signals and a mirror, move the mirror around until...
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Nugatory reacted to A.T.'s post in the thread I How Is Intrinsic Curvature Measured in Higher Dimensions Like 4D Spacetime? with
Like.
From: https://en.wikipedia.org/wiki/Tangent_space In the context of physics, the tangent space to a manifold at a point can be viewed... -
Nugatory replied to the thread I How Is Intrinsic Curvature Measured in Higher Dimensions Like 4D Spacetime?.They aren't "on" the sphere anywhere. There is a mapping from each point on the surface of the sphere to a two-dimensional vector space...
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Nugatory replied to the thread I How Is Intrinsic Curvature Measured in Higher Dimensions Like 4D Spacetime?.The tangent space at a point is not a plane in the 3D embedding space (although that is a natural way of visualizing it, continuing our...
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Nugatory reacted to pervect's post in the thread I Conventionality of the One-Way Speed of Light with Like.
A cautionary note is needed here I think. High school and introductory physics has been known to be formulated and taught in such a...
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I'm not leaving; I've been advised on reading Girardi’s book “Sneaking a look at God’s cards” to clear up my view on QM, and I'm...
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Nugatory replied to the thread B New idea about wave-particle duality - looking for feedback/criticism.You have been victimized by pop-sci misdescriptions. The entire notion of “wave-particle duality” was abandoned as a false start almost...
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No, that's something like a one-time pad. There's a single secret that can be used for encryption and decryption. The thing about...
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Nugatory replied to the thread Is this public key encryption?.You might want to, as it makes it possible to prove that a message came from you. Say you want to make a public proclamation that is...