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太阳光通过三棱镜时色散的说明南大附中耿立松物理（必修）课本（第二册）１９５页“白光的色散实验”是将一束白光从下偏上射向三棱镜，由于在同一种介质中紫光速度最小，它的折射率最大，即偏向角台最大，光线按图１射向棱镜时必然红光在上方．实际上很多中学是将斜向下...
Explanation of Dispersion When Sunlight Passes Through a Prism Aided at NTU Daisuke Matsumoto Physics (required) Textbook (Volume 2) Page 195 “White light dispersion experiment” is to shoot a beam of white light from the bottom to the top of a prism, due to the violet light in the same medium. The speed is the smallest, and its refractive index is the largest, that is, the deflection angle is the largest. When the light is directed toward the prism as shown in Fig. 1, the red light must be at the top. In fact many secondary schools will be inclined downwards...