Physical Reality in the Classical Electromagnetism

There are several approaches to the concept of «Filed» in the classical theory of Electromagnetism; Operationalism and Realism are two important strategies in this regard. I this paper the Realistic view of Marc Lang is introduced as well as the empiricist views of Carnap and Bridgman. Lang in his famous book «An Introduction to the Philosophy of Physics» suggests two essential questions about «action at distance» and «reality of fields» and after a proper discussion conclude that the Classical Physics is not capable of dissolving the problems relating the locality and the ontology of energy and field، and it is the mission of the Special Theory of Relativity.