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Explore bending of light between two media with different indices of refraction. See how changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows.
The objectives of this experiment are as follows: To measure the angles of incidence and refraction at a boundary between media. To observe total internal reflection at a boundary between media. To calculate the critical angle of a boundary between media.
Objectives. To test the laws of refection and refraction. To measure the indices of refraction for water and glass. To find the position of the image produced by a plane mirror. Methods. Part A. Law of Reflection and Image Formation by a Plane Mirror.
Refraction. As for reflection, a simple law characterizes the behavior of a refracted ray of light. According to the Law of Refraction, also known as Snell's Law: n1sin!1=n2sin!2 The quantities n1 and n2 are constants, called indices of refraction; they depend on the two media through which the light is passing.
The Law of Reflection states that the angle of incident ray equals the angle of the reflected ray, or θi = θR. The Law of Refraction (Snell's Law) relates how a ray of light will behave when passing from one media to the other. It is given by: n 1sinθi = n 2 sinθ r where n1 and n2 are the indices of refraction for the two different media.
In today's laboratory several properties of light, including the laws of reflection, refraction, total internal reflection and polarization, will be examined. Figure 1: Optics table setup for the law of reflection experiment.
Law of refraction. Snell's law relates the angle of incidence to the angle of refraction. Snell's law is stated as. n1sinθ1 = n2sinθ2 or n1sinθi = n2sinθt. Here, n1 and n2 refer to the indices of refraction of the two materials or in other words their optical densities. The index of refraction in air is n. air. = 1.00.
