Critical Angle for Total Internal Reflection calculator
This CalcTown calculator calculates the critical angle for Total Internal Reflection when light passes from a medium of higher refractive index to that with a lower refractive index. Critical angle is the minimum angle of incidence for which total internal reflection takes place.
θc=Critical Angle of incidence
ni=Refractive index of medium 1
nr=Refractive index of medium 2