Abstract

It is considered in the superposition principle of electrostatic field and the special relativity that the electric field around the moving electrons in permanent magnet still exists and presents length contraction in the direction of movement. Through experimental analysis, it is also considered that the motion states of two electric fields having same direction and opposite direction of motion cancel out each other. Based on the two above-mentioned basic concepts, it can be inferred that negative electrostatic field exists in the vicinity of cubic permanent magnet N and S pole surface edge while positive electrostatic field exists in the vicinity of side edge. In addition, the results of experimental verification are also introduced.

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