摘要
用精密导电塑料电位器代替分光计的游标刻度盘,可以实现用电测法来测量角度.定标曲线的相关系数r=0.9999,说明精密导电塑料电位器的线性度很好,输出电压和角度变化有很好的线性关系.从实验测量结果来看,由刻度盘测量的三棱镜顶角、最小偏向角和光栅的光栅常量与用精密导电塑料电位器测出的对应值,两者的相对偏差小于1%,可满足实验要求.
Using precise plastic variable resistor to replace the dial of the spectrometer, the refraction angle of light is measured, r=0. 999 9 indicates that the output voltage and the angle are linearly correlated. The difference between the results of the top angle of the triangular prism, the angle of mimium deviation and the grating constant obtained with this new method and that obtained with traditional method is less than 1% .
出处
《物理实验》
2008年第5期5-8,共4页
Physics Experimentation
关键词
分光计
角度传感器
三棱镜
光栅
spectrometer
angular transducer
triangular prism
gating
