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LarryS's latest activity
LarryS
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Vanadium 50's post
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I
Is Relativistic Action for a beam of light = zero?
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How would the equations of motion change if you added a constant to the Lagrangian? When you answer "not at all", the next question is...
Mar 27, 2024
LarryS
reacted to
PeterDonis's post
in the thread
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Is Relativistic Action for a beam of light = zero?
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Actually, it's the other way around: Maxwell's Equations are the Euler-Lagrange equations for the EM field Lagrangian. More precisely...
Mar 27, 2024
LarryS
replied to the thread
I
Is Relativistic Action for a beam of light = zero?
.
The Lagrangian Density for the EM field can be derived from Maxwell's Equations (via the EM Field Tensor). Also, from Maxwell's...
Mar 16, 2024
LarryS
posted the thread
I
Is Relativistic Action for a beam of light = zero?
in
Special and General Relativity
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Under the RELATIVISTIC definition of Action, is the Action for a beam of light always zero? Thanks in advance.
Mar 15, 2024
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