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scoomer
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The Feynman LECTURES ON PHYSICS (NEW MILLENNIUM EDITION) by FEYNMAN•LEIGHTON•SANDS
VOLUME II discusses radiation from an infinite sheet of switched-on constant current in section "18-4 A traveling field" on page 18-15. The solution shows a constant E field and constant B field at a given point x after the wave front has passed x. The constant E field as been disputed.
A now closed PF discussion found at "https://www.physicsforums.com/threads/infinite-current-sheet-current-suddenly-turned-on.419209/" makes claims that there is no steady E field and thus Feynman is in error.
This same scenario is given as a problem in "Griffiths, David J. (2007), Introduction to Electrodynamics,. 3rd Edition; Pearson Education - Chapter 11, problem 24" and the solution is given at
"physicspages.com/pdf/Griffiths%20EM/Griffiths%20Problems%2011.24.pdf"
in Example 1 on page 4 which for the case a steady current. The result in this article agrees with Feynman's result of a constant E field.
Is Feynman right or wrong? I believe that Feynman is correct (although there isn't much discussion about the resulting E field). Can anyone comment on which answer is correct?
VOLUME II discusses radiation from an infinite sheet of switched-on constant current in section "18-4 A traveling field" on page 18-15. The solution shows a constant E field and constant B field at a given point x after the wave front has passed x. The constant E field as been disputed.
A now closed PF discussion found at "https://www.physicsforums.com/threads/infinite-current-sheet-current-suddenly-turned-on.419209/" makes claims that there is no steady E field and thus Feynman is in error.
This same scenario is given as a problem in "Griffiths, David J. (2007), Introduction to Electrodynamics,. 3rd Edition; Pearson Education - Chapter 11, problem 24" and the solution is given at
"physicspages.com/pdf/Griffiths%20EM/Griffiths%20Problems%2011.24.pdf"
in Example 1 on page 4 which for the case a steady current. The result in this article agrees with Feynman's result of a constant E field.
Is Feynman right or wrong? I believe that Feynman is correct (although there isn't much discussion about the resulting E field). Can anyone comment on which answer is correct?