全反射临界角计算器 — 公式
## Critical Angle
The critical angle is the angle of incidence above which total internal reflection occurs when light travels from a denser to a less dense medium.
### Formula
**theta_c = arcsin(n2 / n1)**
where n1 > n2. Above this angle, no light passes through the boundary.
The critical angle is the angle of incidence above which total internal reflection occurs when light travels from a denser to a less dense medium.
### Formula
**theta_c = arcsin(n2 / n1)**
where n1 > n2. Above this angle, no light passes through the boundary.
计算示例
Light going from glass (n=1.5) to air (n=1).
- theta_c = arcsin(n2/n1)
- theta_c = arcsin(1/1.5)
- theta_c = arcsin(0.667)
- theta_c = 41.81°