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PeroK's latest activity
PeroK
replied to the thread
B
Newton's first law?
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I agree. They are subtly different, I would say.
Aug 14, 2025
PeroK
reacted to
A.T.'s post
in the thread
B
Newton's first law?
with
Like
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How are they "very different", if the difference has zero impact on the quantitative predictions?
Aug 14, 2025
PeroK
replied to the thread
A Crisis for Newly Minted CompSci Majors -- entry level jobs gone
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That's the sort of thing that happens on IT projects!
Aug 14, 2025
PeroK
replied to the thread
B
Newton's first law?
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See post #2 where I said: It doesn't matter whether you start with "Young and Randall" or start with "Serway". You end up with the...
Aug 14, 2025
PeroK
reacted to
Ibix's post
in the thread
I
Conventionality of the One-Way Speed of Light
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Like
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It's not necessarily the one-way speed, but it is necessarily the two-way speed of light. What your maths tells you, in short, is that...
Aug 14, 2025
PeroK
replied to the thread
B
Newton's first law?
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The motion of the planets relies on the gravitational force to keep them in an elliptical orbit. The point that Newton is making is that...
Aug 14, 2025
PeroK
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wrobel's post
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Why is the 3 body problem unsolvable? And what will happen if someone solves it?
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The 3 body problem was the first example on which people became aware of what dynamical chaos is. The effect of separatrices...
Aug 14, 2025
PeroK
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Herman Trivilino's post
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Why is the 3 body problem unsolvable? And what will happen if someone solves it?
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Oh, it's definitely solvable, and we know how to solve it. So your conclusion is correct, but I don't see how it follows from your...
Aug 14, 2025
PeroK
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James Demers's post
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Why is the 3 body problem unsolvable? And what will happen if someone solves it?
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Like
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This is a bit of an over-simplification, but essentially you have 18 variables: 3 bodies x (3 velocity vectors + 3 coordinates)...
Aug 14, 2025
PeroK
reacted to
Dale's post
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I
Conventionality of the One-Way Speed of Light
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Like
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The conventionality of the one way speed of light (OWSOL) was recognized from the very beginning. In the seminal paper On the...
Aug 14, 2025
PeroK
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Muu9's post
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Need a book on Modern Physics to supplement Griffiths QM
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Like
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I was hoping you would go through the effort of doing that for us. Something something burden of proof...
Aug 14, 2025
PeroK
reacted to
MidgetDwarf's post
in the thread
Need a book on Modern Physics to supplement Griffiths QM
with
Skeptical
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Maybe have a look at Townsend and McTyre book? Then look at Griffiths? The difference is night and day.
Aug 14, 2025
PeroK
reacted to
Demystifier's post
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Does action at a distance violate any conservation principles?
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Like
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But on the other hand, the quantum potential in Bohmian mechanics is neither time-translation nor space-translation invariant, so one...
Aug 14, 2025
PeroK
reacted to
Orodruin's post
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Newton's first law?
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Like
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For things moving free or at rest, Observe what the first law does best. It defines a key frame, Inertial by name, Where the second law...
Aug 13, 2025
PeroK
replied to the thread
B
Newton's first law?
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In the 1905 paper, Einstein says "Let us take a system of co-ordinates in which the equations of Newtonian mechanics hold good." This...
Aug 13, 2025
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