Investigating Refraction

Examine the purpose of refraction: Use the results of graphic processing to find the critical angle and refractive index of plastic. Introduction: Refractive index is the degree of material bending. In this experiment, we investigate to what extent the angle of incidence is refracted and multiply the result by the sign. Draw a graph from the result and calculate the angle of incidence so that the refraction angle becomes 900 (critical angle) using the optimal line.

In this series of experiments, we examine reflection and refraction of planar light. Experimentally study Snell's law and reflection law by examining refraction at the interface through prism refraction and internal total reflection. Throughout the experiment, we use geometric optical approximation to analyze light behavior. When light encounters the boundary between two transparent media, typically a portion of the light is partially reflected from the boundary and partially into the second medium. Each medium is characterized by a dimensionless parameter called the refractive index, ie the ratio of the velocity of the light in vacuum to the velocity in the medium (represented by n 1 and n 2). Light strikes the medium 1 and strikes the interface between the two media at an angle α with respect to the surface normal (see FIG. 1). Transmitted light propagates in a direction different from incident light

Students study refraction of light through translucent objects. Students conduct a physical survey to indicate the direction of light as they enter another medium through the boundary of one medium. Then they further explored by studying the total internal reflection of translucent objects. Pour a large batch (1 gallon) of milky solution into each semicircular container. First, put a few drops of fresh milk or a small amount of powdered milk. Make sure that the light is irradiated on the solution and that the light can be seen. Otherwise, add more milk and repeat this process until the beam path is clearly visible. Add a small amount of milk to water at once. When too much milk is added to the water, the solution becomes too opaque and can not easily see the route. In order to minimize spillage, consider placing milky white in a small cup instead of a semicircular container.