The characteristics and definition of simple harmonic motion are discussed, and the relationship between vibration in general physics mechanics and micro-vibration in theoretical mechanics as well.

简谐振动是振动的基础。 本文讨论了简谐振动的特点，简谐振动的定义以及普通物理力学中振动与理论力学中的微振动之间的关系。

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This article discusses how the point charge move in the electrified field produced by the electrified ball, and come to the conclusion that the motion of the point charge is simple harmonic vibration.

讨论点电荷在带电球体所产生的电场中的运动情况，得出了点电荷的运动为简谐振动的结论。

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