Name: Date: Results: (90 pts max) PHYS 1110L Conceptual Physics Lab Lab 7 Simulation: Bending Light Part 1 Getting Started Open GOOGLE CHROME or other compatible browser and DISABLE all BROWSER POP-UP BLOCKERS. Go to https://phet.colorado.edu/en/simulation/bending-light - Observe Learning Goal The purpose of this lab exercise is to study the nature of reflection and refraction of light. Part 2 Move the protractor and line it up with the surface of the interface between the two materials. Press the red button to turn on the laser. For each scenario, select the top and bottom material as specified in each data table. Record the index of refraction, n, for each material in the data table. Choose two incident angles between 50- 850 for each scenario, and record the incident, reflected, and refracted angles in the table. After filing in the table, draw the rays as they are in the sim. Top Material: Air Top Index of Refraction (n): Bottom Material: Water Bottom Index of Refraction (n): Incident Angle Reflected Angle Refracted Angle Top Material: Air Top Index of Refraction (n): Bottom Material: Glass Bottom Index of Refraction (n): Incident Angle Reflected Angle Refracted AngleLab 10 Bending Light Top Material: Water Top Index of Refraction (n): Bottom Material: Glass Bottom Index of Refraction (n): Incident Angle Reflected Angle Refracted Angle Top Material: Water Top Index of Refraction (n): Bottom Material: Air Bottom Index of Refraction (n): Incident Angle Reflected Angle Refracted Angle Top Material: Glass Top Index of Refraction (n): Bottom Material: Air Bottom Index of Refraction (n): Incident Angle Reflected Angle Refracted Angle Top Material: Glass Top Index of Refraction (n): Bottom Material: Water Bottom Index of Refraction (n): Incident Angle Reflected Angle Refracted Angle 2 of 4Lab 10 Bending Light Part 3 Now click on PRISMS at the bottom. Turn on the LASER. Drag the triangle prism into the path of the laser. Click on the NORMAL button on the bottom right. 1 . Draw the light rays, prism, and normal for your configuration. 2. What color of light refracts more when moving through the prism? 3 Now remove the prism and drag the convex lens (rounded on the left side, flat on the right side) into the path of the laser. Select the multiple beam laser. Center the laser on the surface of the rounded side of the lens. Draw the lens and light rays. 5 . Now remove the convex lens and replace it with the concave lens (curved inward on the left side, flat on the right side). Draw the lens and light rays. Making Connections TOTAL INTERNAL REFLECTION When light hits an between two types of with different indices of Some is O Some is Critical angle Angle of where angle is Angles of incidence than this cause the angle to be the material. This can't happen, so refraction occurs. 3 of 4Lab 10 Bending Light 0 0c = sin 1 (n21) Where n1 > n2 What is the critical angle from cubic zirconia (n = 2.16) to air? Will an angle of 25 produce total internal reflection? USE OF TOTAL INTERNAL REFLECTION for Endoscopes O Telecommunications O Decorations telescopes Reflectors Gemstones o Cut so that light only at certain DISPERSION . Each of light has a different of refraction Red O Violet - o When light is refracted, the violet bends more than red, which the colors Rainbows O by with internal Rainbows are always the direction from the sun