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本文介绍一种光折射的演示法，它是用激光作光源，可演示光的折射现象和测定折射率，这种方法容易操作并且准确度高，它适用于任何教室环境
This article presents a demonstration of light refraction, which uses a laser as a light source to demonstrate the refraction of light and to measure the refractive index. This method is easy to operate and highly accurate and suitable for use in any classroom environment