...示波器显示李萨如图 当两个正弦信号的频率之比为整数时,其轨迹是一个稳定的闭合曲线 ,这种曲线称为李萨如图(Lissajous Figures )。 结论:如果已知一个信号的频率,可求出另一信号的频率。
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李萨如图形 Lissajous figures
A Lissajous figure could be obtained by calculating and translating the sum of gray-value of pixels in each column.
通过计算光栅图像每一列中所有像素点的灰度值之和,把条纹灰度值进行平移,得到一幅李萨如图。
参考来源 - 高精度光学自动对准系统的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
用李萨如图形法测量声速误差较小。
The experiment error of sound velocity measuring is very small with lissajous figures.
用李萨如图形调整盒式磁带录音机走带速率的方法方便、适用。
The method of adjusting the running speed rate of cassette tape recorder by Lichtenberg' s figures is easy snd practical.
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。
Using smooth guides, spring oscillator and high brightness LED, a simple method of demonstrating Lissajous figure is introduced.
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