# Explain The Concepts Of Reflection, Refraction, Dispersion And Brewster 's Angle

1436 WordsNov 17, 20146 Pages
Introduction In this experiment four different experiments were performed to explain the concepts of reflection, refraction, dispersion and Brewster’s angle. The purpose of the first experiment is to analyze the incidence and reflection angle to understand how light reflects off a flat, convex, or concave mirror. In the second experiment a light ray is passed through a rhombus prism to discover the relationship between the angle of refraction and incidence. For the third experiment calculations were made to find indices for the color of light that passed through an acrylic rhomboid. This experiment depicted dispersion. Finally, the last experiment conducted dealt with the angle reflection and angle of refraction. Using polarizing lens to…show more content…
After the mirror had been traced, it was taken off the paper and a line was sketched at the halfway point. A ruler was used to draw the line outside of the traced mirror. The line was the normal line. Also, inside the tracing on the line 1.8 cm was measured and labeled. Then a line was drawn from the point opposite to the concave side and extended outside of the outline. Another line was sketched with the ruler from the point of opposite to the convex side and extended a few centimeters past the outline. See Figure A During, the procedure the first step involved placing the mirror with all three sides to fit into the outline. The light source was pointed at the side of the flat mirror. There was an incident and reflection ray both were traced. When the mirror was removed, the lines were measured using a protractor to retrieve the angle measurements. This process was repeated for the concave and convex sides. The data is shown in table 1A, 2A, 3A. Note: The data tables will be included in the Data & Analysis section. Figure A Theory B: Refraction In the second experiment refraction was observed. Refraction is the bending of a light wave which changes the speed once it hits another material. The ray of light hitting a fast medium will slow down. Depending on the indexes of refraction the light will either slow down or travel faster. The relationship between the indexes of refraction and the way the light bends when passing through a