Reflection, refraction and total internal reflection

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By the end you’ll be able to

describe reflection at a plane surface and apply the law of reflection using the normal, angle of incidence and angle of reflection
explain refraction as a change in direction caused by a change in wave speed when a wave crosses a boundary between media
state and apply that frequency stays the same during refraction while speed and wavelength may change

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explain the conditions for total internal reflection and identify when it occurs

apply total internal reflection to optical fibres and other devices that guide light

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