The angle of a light ray after it passes from one medium to another is called the angle of refraction, and it’s related to the angle of incidence by Snell’s Law.
光线从一种介质进入另一种介质后的角度称为折射角，根据斯涅尔定律，它与入射角有关。
Snell Law
原声例句
Crash Course 综合篇
Crash Course Physics 速成课物理
The angle of a light ray after it passes from one medium to another is called the angle of refraction, and it's related to the angle of incidence by Snell's Law.
光线从一种介质射入另一种介质后的夹角称为折射角，根据折射定律它与入射角有关。
英语百科
Snell's law
Snell's law (also known as the Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.
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