Solving Feynman's traveling field problem using retarded potential
In this paper,we use the retarded potential to solve the traveling field problem proposed by Feyn-man in his lectures on physics.Compared with general electromagnetic radiation problems,the retarded potential solution has the following characteristics in this particular problem:(1)the retarded potential is simple to in-tegrate,and an exact analytical solution can be obtained;(2)the physical idea is clear,and the physical concept of"electromagnetic action propagates with finite speed"contained in the retarded potential formula is fully demon-strated in the solving process.
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