Abstract

In theory of electromagnetism, there are principles indicated as below: motional magnetic field shall not exist; action and reaction can be in the same direction, but differ in value; magnetic field can have an infinitely great motional speed; the same physical phenomenon can be explained conversely in different inertia systems; there is no uniform scientific explanation for deflection of high-speed charged particle in magnetic field; coexistence of static magnetic field with static electric field cannot be explained. Hence, truth of the above principles of electromagnetism is questioned here.

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