Today we learned about the the ray model of light and the laws of reflection and refraction.

今天我们学习了梁模型 以及反射和折射定律。

This way of thinking about light is called the ray model, and the core tenant of the model is that light travels in straight-line paths called rays.

这种对光的思考方式称为射线模型，该模型的基础是光沿称为射线的直线路径传播。