Snell’s Law in Upper Secondary
Friday, June 14, 2019
Year 11 students at Assumption College English Program study the refraction of light via Snell’s Law. Light travels at different speeds according to the density of the medium in which it is travelling. Light travel more slowly in denser media. This phenomena is responsible the refraction of light – light bending when it changes the medium in which it is travelling. Here, students measure the angle of incidence and the angle of refraction of a laser beam as it travels from air into a semi-circular prism. These angles are related via Snell’s Law:
(n1 sin i = n2 sin r)
From this relationship the refractive index of the prism may be calculated.
Text written by Mr David Condie, Physics teacher