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    Hi, I'm a bit stuck for a definition of why the angle of incidence affects the angle of refraction?
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    Hello,
    When a ray of light enters from a less optically dense medium to a more optically sense medium (I.e: air to glass), it slows down and this change in speed causes it to bend towards the normal line (the imaginary line that acts as a point of reference perpendicular to the boundary of surfaces) and therefore when it leaves and reenters the original substance at the other side, it bends away from the normal by the SAME AMOUNT. Therefore the angle of incidence is the same as the angle of reflection. (Also you could use the vertically opposite angles are equal theory from maths )
    Hope this helps. Just ask if anything else comes up. xx
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    thank you!
 
 
 
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