摘要
示波器等仪器虽能直观地显示简谐振动的合成结果,但其显示的图形不太稳定且无法演示合成过程.针对以往演示仪器的不足,利用LED灯模拟了示波器来实现简谐振动的合成和光的5种偏振态,具有连续动态的图形显示.该演示仪不但能显示合成图形,还可实现动态地演示合成的过程.
Instruments such as oscillograph could show the results of the composition of simple harmonic motions, but their displays of graphics are unstable. To overcome the shortcomings of pre- vious equipments, the author suggested an improved way to demonstrate the composition of simple harmonic motions and five polarization states of light using LED and designed an improved demonstra- tion instrument. The instrument could show coutinuously and dynamically the process of composition as well as display the graphics of the results.
出处
《物理实验》
2013年第11期45-48,共4页
Physics Experimentation
关键词
简谐振动
偏振态
LED灯
simple harmonic motion
polarization state
LED
