Part B Lab Go to PhET website. Click on Simulation/Physics. Under Physics, choose Light & Radiation. Under Light & Radiation, Bending Light is the 6th simulation (Location might change. Sort by A-to-Z search.). Click to run the Bending Light/More Tools. Test and understand all functional tools on screen. You must practice figuring out what is the best way to complete the measurement. Ray Weve 01 450 Material As Index of Reaction (5) 450 n1 1.000 2 Material 28.2 Index of Refraction (5) 1400 Data Table 1: Measure Index of Refraction n and Speed of Light in this Medium. Basic Operation Procedures Using Bending Light/More Tools Simulation: 1. Go to PhET website. Click on Simulation/Physics. Under Physics, choose Light & Radiation to locate the Bending Light simulation (sort by A-to-Z search.). Click to run Bending Light/More Tools. 2. Place check marks on Ray (default), Normal (default), and Angles located on the bottom-left screen. Keep the default setting Material 1 index of refraction as air n = 1.000 (above surface) and Material 2 (below surface) index of refraction as glass n2. as shown in Sample Figure 1. 3. Adjust incident Wavelength of light to = 700 nm (top-left screen). Press the Red Button of the light source. Using the default incident angle 0 = 45, record the refracted angle 02 (sample 02 = 28.2) and index of refraction n2 (sample n2M = 1.499 from Material 2), as shown in Sample Figure 1. 4. Calculate index of refraction n2 by n2 = nisine1/sin02 (sample n2 = nisin01/sin02 = 1-sin45%sin28.2 = 1.496). Calculate the light-speed v2 in n2 medium by v2 = c / n2 (c) (sample v = c/n2 = c/1.496 = 0.668 c), as shown in Sample row-1 data in Table 1. Note: D2 = c/n2 (c) is in unit of c, c = 3.0 x108 m/s speed in air. 5. Repeat steps 3 to 4 for setting Wavelength to 600 nm, 500 nm, and 400 nm, respectively. Record your data in Data Table 1. Attach screenshots of each Simulation data to lab report. C Normal Angles A 02 Data Table 1: Measure Index of Refraction n and Speed of Light in this Medium. Keep incident angle 0 = 45. Vary incident wavelength , (nm). Measure/record refracted angle 02 () and index of refraction n2 in medium of glass. Calculate n2 by Snell's law: n2 = nisin01/sin02. Calculate speed of light in glass by v = c /n2 (in unit of c), c is speed of light in vacuum: c = 3.0 x108 m/s. Attach screenshots of each Simulation data to Lab Report. 2 21 (nm) 02 () 700 28.2 1.499 600 500 400 n2 = nisin01/sin02 D = c /n2 (c) 1.496 0.668 Questions: From data = 700 nm in air, find the wavelength 22 and speed v2 in 2nd medium. Calculate frequency in air and glass for = 700 nm. When the incident 2, is changed, what quantities will change in 2nd medium?