An optician directs a laser beam through a transparent medium, toward one surface of an equilateral prism. (The beam travels, and remains in, the plane of the page.) Incident on Surface 1 at an angle e,, the beam then encounters Surface 2 from within the prism. If the angle of incidence at Surface 2 equals 0,, the critical angle for this prism, what is the original incidence angle, 0, (in degrees)? The critical angle in this case is e, = 42.5°. Surface 1 60.0° 42.5° Surface 2 42.50 18.68 What does the critical angle tell you about the ratio of the indices of refraction in the prism and the surrounding medium? Use geometry to determine the angle of refraction that the light undergoes upon entering the prism from above. Then apply Snell's law to compute e,. Double check that your calculator

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Refraction of Light

Refraction is a change in the direction of light rays when they travel from one medium to another. It is the bending of light when it goes through different media.

Angle of Refraction

Light is considered by many scientists to have dual nature, both particle nature and wave nature. First, Particle nature is one in which we consider a stream of packets of energy called photons. Second, Wave nature is considering light as electromagnetic radiation whereas part of it is perceived by humans. Visible spectrum defined by humans lies in a range of 400 to 700 nm wavelengths.

Index of Refraction of Diamond

Diamond, the world’s hardest naturally occurring material and mineral known, is a solid form of the element carbon. The atoms are arranged in a crystal structure called diamond cubic. They exist in a huge variety of colours. Also, they are one of the best conductors of heat and have a very high melting point.