Total Internal Reflection and Critical Angle - A Level Physics

This video introduces and explains total internal reflection and its relationship with the critical angle for A Level Physics.

Total internal reflection occurs when light reflects off of the boundary between two mediums. Where light gets refracted such that the angle of refraction is greater than the angle of incidence, at some angle, the light will be refracted at an angle of 90 degrees and is reflected instead. The smallest angle of incidence that this occurs at is called the critical angle.

Thanks for watching,

Lewis

This video is recommended for anyone studying A Level Physics in the following exam boards:
AQA
CIE
Edexcel
Edexcel IAL
Eduqas
IB
OCR A
OCR B
WJEC

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