Nugatory's latest activity
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Nugatory replied to the thread Undergrad 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... -
Nugatory replied to the thread Undergrad 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 Undergrad Conventionality of the One-Way Speed of Light with
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A cautionary note is needed here I think. High school and introductory physics has been known to be formulated and taught in such a... -
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 High School 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...
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Nugatory reacted to A.T.'s post in the thread Undergrad Question about Parallel Transport with Like.
Every time he himself turns by an angle x relative to the ground beneath his feet, he also turns the arrow by -x relative to himself, so...
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Nugatory replied to the thread High School Does a Probabilistic Multiverse Invalidate the Value of Scientific Inquiry?.You are starting from the premise that there is such a thing as a "multiverse". Maybe there is, maybe there isn't, but nothing in our...