"In the case of electrodynamics it is often much easier to determine the vector and scalar potential first, and then derive the electromagnetic field from these potentials, as compared to obtaining the electromagnetic field directly from the equations of motion."
"In the case of electrodynamics it is often much easier to determine the vector and scalar potential first, and then derive the electromagnetic field from these potentials, as compared to obtaining the electromagnetic field directly from the equations of motion."
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