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seen Mar 13 at 1:29

Jan
15
comment Why doesn't Newton's Second Law include higher-order mass?
@Qmechanic Is there a compelling reason to start from a Lagrangian/Hamilton's principle? I always thought these were only valid because they "happen" to generate Euler-Lagrange equations that match Newton's law.
Jan
14
asked Why doesn't Newton's Second Law include higher-order mass?
Oct
25
asked If I roll an elastic plate into a cylinder, does it shrink?
Feb
11
awarded  Yearling
Jan
21
comment What does this quote about the four dimensional divergence of an antisymmetric tensor mean?
@joriki I'm the one who voted to migrate to physics.stackexchange. It's true that the OP is asking about mathematical terms, but I suspect that someone familiar with the underlying context (ie the physics of light) might be better equipped to answer the question.
Dec
30
comment Why does the nature always prefer low energy and maximum entropy?
Of course, this raises the question of why entropy doesn't also increase into the past.
Jun
25
comment Why didn't Newton just propose the 2nd Law and leave it at that?
Fair enough, although you wouldn't need to postulate the third law as a separate "law"; it would be a consequence of the symmetries of the potentials you plug in.
Jun
25
comment Why didn't Newton just propose the 2nd Law and leave it at that?
However the third and second law could be condensed into an Only Law: $m\ddot{q} = -\nabla V(q).$
Jun
24
awarded  Scholar
Jun
24
accepted what is the 2D gravity potential?
Jun
23
comment what is the 2D gravity potential?
If their velocities are all also colinear, then yes, I would have expected so...
Jun
23
awarded  Student
Jun
23
asked what is the 2D gravity potential?
Mar
18
awarded  Teacher
Mar
18
awarded  Supporter
Mar
18
answered Origin of elements heavier than Iron (Fe)