I read in an old book on electrodynamics by Pauli that
theoretically there does not exist any need of charges to be there. Fields can even exist without the charges but still independent fields have not been observed still. EMWs are also produced from any accelerated charges.
I want to know that have physicists found fields without electric charges today? I also want to know that if there actually does not exist any field without directly or indirectly originated from charges then there is something missing in the Maxwell equations or it is not like that? I think that until we can experimentally prove the existence of the fields without charges we cannot tell the Maxwell equations a complete theory of the electrodynamics because it allows the fields without charges but if there exist some nature of the electromagnetic entity that it requires charges for fields then it is not explained in these equations.
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