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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.
nr = index of refraction of the refractive medium. This relationship between the angles of incidence and refraction and the indices of refraction of the two media is known as Snell's Law. Snell's law applies to the refraction of light in any situation, regardless of what the two media are.
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.
In refraction we will learn that the angle of the ray when transmitted through the material changes and depends on the speed of light in the two materials. Many phenomena encountered in our daily lives can be simply explained on the basis of refraction and reflection.
Lab 10: Snell’s Law and Refraction. • Gain understanding about the behavior of light as it passes from one medium to another. • Compare least time travel to the rules of refraction. • Use Snell’s Law to calculate the index of refraction of water and compare it to 1.33.
The Snell's Law Video Tutorial discusses the variables that affect the amount of refraction occuring at a boundary and shows how Snell's law of refraction is developed from laboratory data. The video includes two example problems with complete solutions.
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.
