Timeline for The electromagnetic Lagrangian $L=(8\pi)^{-1}(E^2-B^2)$ vanishes for an EM plane wave. Why doesn't the energy-momentum tensor also vanish?
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| when toggle format | what | by | license | comment | |
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| Jul 25 at 22:02 | history | answered | Lenard Kasselmann | CC BY-SA 4.0 |