Nugatory's latest activity
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Nugatory replied to the thread High School Contradictions in the Distribution of Gamma-Ray Bursts.The thread will remain closed. -
Nugatory reacted to Herman Trivilino's post in the thread High School True static equilibrium and effects on time with
Like.
You're still not getting it. If we are moving inertially relative to each other then either of us could validly claim to be at rest and... -
Nugatory replied to the thread High School True static equilibrium and effects on time.You are just cheating yourself out of essential background understanding (which is the really fun part) if you've skipped chapters 1-3...
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Nugatory replied to the thread High School Questions about the structure of dark matter.There’s no “if” here, dark matter is defined to be the stuff we haven’t seen yet that is interacting with the mass we have seen. It...
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Nugatory replied to the thread Graduate Collapse of wave function and consciousness.Yes, seriously in some philosophies of ethics and less seriously in new-age pseudo-philosophy. However this thinking has proven...
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Nugatory reacted to PeroK's post in the thread Introduction: Non-physicist with speculative questions with Like.
If you are interested in Multiverse theories, you could start here: https://en.wikipedia.org/wiki/Multiverse
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Nugatory replied to the thread Undergrad Nested universes across scales - existing literature?.No. Your speculative idea neither explains some previously observed but unexplained phenomenon nor suggests some experiment/observation...
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Dear Robert, My condolences to you and your family. He was a great contributor to the PF community. We will miss him. I will miss his...
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Nugatory replied to the thread Paul Hinds has passed.Very sorry to hear this - he contributed much over the years and will be missed.
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Nugatory reacted to JimWhoKnew's post in the thread Graduate Kruskal Coordinates in Schwartzchild metric with Like.
Of course they are not. That's how you can get the factors right. Hint: use ##~e^{\ln{x}}=x~## in the equation in #7.
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Nugatory reacted to JimWhoKnew's post in the thread Graduate Kruskal Coordinates in Schwartzchild metric with Like.
I lost track. Can you see that after the correction, you have$$\frac{2M}r e^{-r/2M}d\bar{u}d\bar{v}=\frac{2M}r...
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Nugatory reacted to JimWhoKnew's post in the thread Graduate Kruskal Coordinates in Schwartzchild metric with Like.
Shouldn't it be ##dr^*=dr+dr/(r/2M-1)=dr/(1-2M/r)## ? I didn't read beyond that. I'll do, if necessary, after your reply.
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Nugatory reacted to JimWhoKnew's post in the thread Undergrad The imaginary part of the wave function with Like.
Introductory textbooks usually deal a lot with time-independent Hamiltonians of the form$$H=\frac{\mathbf{P}^2}{2 m}+V(\mathbf{x})\quad...
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Nugatory replied to the thread Undergrad EPR revisited.Do remember that collapse is not part of the theory of quantum mechanics as described by the math (which is the only real description of...
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Nugatory reacted to JimWhoKnew's post in the thread Undergrad Klein-Gordon equation in the nonrelativistic limit with Like.
From relativity, having the rest mass as the limit of the energy when the kinetic contribution goes to zero, is a welcome feature...