点光源全反射实验装置  

Total internal reflection device for point light source

作　　者：任攀 REN Pan(No.2 Middle School of Huzhou,Huzhou 313000,China)

机构地区：[1]湖州市第二中学,浙江湖州313000

出　　处：《物理实验》2025年第4期59-62,共4页Physics Experimentation

摘　　要：自制了点光源全反射实验装置,可有效避免容器内壁反射光对实验的影响.利用该装置可以清晰地观察到点光源全反射的圆斑现象,探究圆斑半径与光源到幕布距离之间的变化关系.对比不同颜色点光源形成的圆斑半径,可以帮助学生更好地理解全反射的本质.The experimental device for total internal reflection of a point light source was made,effectively avoiding the interference from the internal wall reflections.The device made us observe the round spot of the total reflection of the point light,and then the dependence of radius of the round spot on the distance between the source and screeen could be investigated.Comparing the spot radii of the round spots formed by sources with different colors can help students better understand the nature of total internal reflection.

关 键 词：全反射 点光源 临界角 

分 类 号：G633.7[文化科学—教育学]