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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 _____________________________________ MY PHYSICS WEBSITES Find even more videos organised by exam board and topic at: GCSE Physics Online ► https://www.gcsephysicsonline.com A Level Physics Online ► https://www.alevelphysicsonline.com MY YOUTUBE CHANNEL Your support in watching this video has been invaluable! To contribute towards the free videos on YouTube, make a small donation at: ► https://www.paypal.me/physicsonline FOLLOW ME ► https://www.youtube.com/physicsonline... ►   / physicsonline   ►   / gcseandalevelphysicsonline   #waves #alevelphysics #physicsonline