re·frac·tion
noun/rɪˈfrækʃn/
/rɪˈfrækʃn/
[uncountable] (physics)- the fact of light, radio waves, etc. changing direction when they go through water, air, glass, etc. at an angle
折射：光，无线电波等以一定角度穿过水，空气，玻璃等时改变方向 - The degree to which the light changes direction is called the angle of refraction.
光改变方向的程度称为折射角。
- The degree to which the light changes direction is called the angle of refraction.