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visits member for 2 years, 9 months
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1d
revised How to emulate 40ft (12 m) of water?
Removed argument-causing bits from a good answer :)
Jun
25
comment A course in Lagrangian Mechanics
@KyleKanos I recommend the book, and he does stuff in there such as deriving [truly, not in a handwavy sense] the E.L. eqs from the least action principle (in the same way Euler did, it turns out), finding the rate of precession given angular momentum and an external torque, and plenty of other good math stuff. So it's far from popular. It does lack in problems a bit though.
Jun
25
reviewed Approve A magnet floating due to Meissner effect
Jun
25
reviewed Approve How to measure the wavelength of a laser pointer?
Jun
21
comment Calculating the resistance of a 3D shape between two points
"Derivation of the whole Drude model"?? There's no need to be so dramatic, it's maxwell+$J=\sigma E$!
Jun
20
comment Calculating the resistance of a 3D shape between two points
This is a pretty poor answer. It doesn't show how this follows from Maxwell's equations, which was part of the question.
Jun
17
answered Falling into the sun, a thought experiment for trying to understand reference frames
Jun
17
comment Derivation of law of inertia from Lagrangian method (Landau)
@AloizioMacedo turns out this is a very annoying question you asked! Let me know if my most recent edit "helps".
Jun
17
revised Derivation of law of inertia from Lagrangian method (Landau)
added 15 characters in body
Jun
17
revised Derivation of law of inertia from Lagrangian method (Landau)
added 15 characters in body
Jun
17
comment Derivation of law of inertia from Lagrangian method (Landau)
@AloizioMacedo Sorry, I was actually thinking about fixing that. The goal of classical mechanics is to uniquely determine the equations of motion. I'll update my post.
Jun
17
answered Derivation of law of inertia from Lagrangian method (Landau)
Jun
17
comment Derivation of law of inertia from Lagrangian method (Landau)
If $L=0\cdot \dot{x}^2$, $\dot{x}$ can be anything and satisfy $L=0$, and that's the issue the OP is getting at.
Jun
16
comment Derivation of law of inertia from Lagrangian method (Landau)
$L=0$ doesn't imply $\dot{x}=0$. Actually, it implies absolutely nothing!
Jun
16
answered Why perpendicular vectors do not share components?
Jun
14
answered On the no-faster-than-light in special relativity
Jun
14
comment Reduced gravity flight's affect on convection based cooling
operation of a macbook pro in "the vomit comet" [or similar aircraft] or in a regular aircraft? On a regular aircraft there should be no difference.
Jun
12
revised Wave number of $\mathbf{E}$ field
added 1 character in body
Jun
12
answered Wave number of $\mathbf{E}$ field
Jun
10
reviewed Approve Difference between angular frequency and angular velocity?