摘要
设计了基于全反射原理和PASCO系统的角度扫描物质折射率计算机测量方案.用波长650nm的激光,测量了水和酒精的折射率,与公认的测量结果较为吻合.通过在透射方观察找到全反射现象,且因出射光线与入射光线的方向是在同一方位,所以透射方并无需转动.引入PASCO系统可测量得到总透射率随入射光角位置的变化关系曲线.
Using the PASCO system, a simple measurement method based on the total internal reflection phenomenon of collimated light is presented.The refractive indexes of water and alcohol at 650 nm are measured. The results are in good accordance with recognized experimental data.The method had two innovations： using transmittance light to observe the total reflection,and the trans-mittance light is in the same direction as the incident light,therefore it is not need to rotate the detector;because of the introduction of PASCO system, the curve of the total transmission intensity versus the incident angle can be measured very easily.
出处
《物理实验》
2008年第2期33-35,共3页
Physics Experimentation
基金
集美大学科研基金资助(NoZB2005014)
关键词
折射率
全反射法
透射光
PASCO系统
refractive index
total internal reflection
transmission light
PASCO system
