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how to calculate snells law. K x Region 1 k x Region 2. Working the numbers youll see that in your case the incident side is usually denoted the n1 side that the angle between the normal and the ray will be greater than the angle between the incident ray and the normal.
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Finally the angle of refraction using Snells law. The angles are measured in radians. N 1 sinth 1 n 2 sinth 2 where.
As in reflection we measure the angles from the normal to the surface at the point of contact.
Indices of refraction of Medium 2 dimensionless th. To become familiar with the calculator enter values for andor then press or the Enter key to compute. The angles in Snells Law are always measured relative to the normal to the barrier which is perpendicular to the barriers surface. For Higher Physics revise how to calculate the expected direction of refracted rays using Snells law.
