3 responses to “Waves

    • I haven’t touched physics for 9 months now, dropped the subject! But from what I remember, the angle of refraction (using the example of light and glass) is the angle between the normal (the line perpendicular to the glass surface) and the ray of light after it has crossed the boundary (refer to diagram in one of the photos).

      Here, this explains it better than I can: http://www.physicsclassroom.com/Class/refrn/u14l2a.cfm

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