Normal mode of coupled harmonic oscillator is obtained by means of algebra, the procedure is simple and the physical meaning is clear.
本文用代数的方法求出了耦合谐振子的简正模，过程简单且物理意义清晰。
Using smooth guides, spring oscillator and high brightness LED, a simple method of demonstrating Lissajous figure is introduced.
介绍了利用光滑导轨、弹簧振子、高亮发光二极管演示李萨如图形的方法。
The method to measure body's inertial mass is proposed by measuring period of vibration with the integrated hall switch sensor, when spring oscillator is in situation of simple harmonic vibration.
提出了在弹簧振子作简谐振动时，利用集成开关型霍尔传感器测量振动周期，以进一步测量物体惯性质量的方法。
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