# The Effect Of A Light Ray Reflecting

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This lab is made up of four different parts. In the first part we will examine the effects of a light ray reflecting at different angles of incident from a convex, flat, and convex mirror. In the second part a light ray will be refracted through a rhombus prism at different angles of incidence. We will measure the angles using a protractor. For the third experiment we will examine the indices of colors as light is refracted through the rhombus. Lastly, we will use polar lens to examine Brewster’s angle and polarization.
THEORY
PART A: REFLECTION
When a light ray hits a point on a plane mirror surface (called the incidence ray), it bounces off that same point and thus changes the course in which it is traveling. An angle of incidence can be obtained by measuring the angle between the ray of incidence and a line normal to the surface of the mirror. The angle of the reflected ray can also be obtained in the same way by measuring the angle between the reflected ray and the line normal to the surface. Measuring the two angles we can see that they are the same angle thus confirming the law of reflection: Θr=Θi. Eq.1

PART B: REFRACTION
Refraction is caused when a ray of light travels through different mediums. When the light crosses through the material it causes the light to bend or refract because the wave does not enter the medium at