1.实验目的:简化测玻璃折射率。2.实验原理:用插针法确定光路,找出和入射线相应的折射线;用量角器测出入射角i和折射角r;根据折射定律计算出玻璃的折射率n=sin i/ sin r。3.实验器材:玻璃砖,白纸,木板,大头针一枚,量角板(或直尺),铅笔。4.实验步骤:(1)把白纸用涂钉钉在木板上。 1. Experimental purposes: to simplify the glass refractive index. 2. Experimental principle: determine the optical path with the pin method to find the corresponding refraction line with the incident ray; measure the incident angle i and the refraction angle r with a protractor; calculate the refractive index of the glass n = sin i / sin r according to the law of refraction . 3. Experimental equipment: glass brick, white paper, wood, a pin, angle plate (or ruler), pencil. 4. Experimental Procedures: (1) nail the white paper on a wooden board.