Snell's Law, Refraction, Total Internal Reflection, Critical Angle - Physics

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Science Education total internal reflection critical angle total internal reflection and critical angle physics critical angle and total internal reflection angle of refraction angle of reflection critical angle physics snell's law

This video explains Snell's law of refraction in simple terms, including formula, equation, what is n1 and n2, and worked example practice problems. The critical angle is defined, which is the condition for total internal reflection i.e. where no refraction occurs in the second medium.

0:00 Refraction and Snell's law
8:48 Total internal reflection, critical angle
12:33 Worked example

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