University:
Colgate University
Course:
PHYS 111 | Fundamental Physics I
Academic year:

2021
Views:

108

Pages:

2
Author:

Heidy Larsen

Name_________________________ Snell’s Law Simulation 1. Choose “play with sims.” Next, chose ›Physics, ›Light and Radiation, and choose ›Bending Light. 2. Learn how to turn on the laser. Play with moving the angle to change the angle of incidence. Figure out how to use the protractor to measure angle of incidence and angle of refraction. Use the light intensity meter to figure out how to measure the percent of the ray that is refracted and reflected. Play with how a ray looks different than a wave. 3. Use the “Reset All” button. Align the protractor. Set up an angle of incidence of 60°. ◆ What is the angle of refraction? __40______ ◆ What is the angle of reflection?____60___ ◆ What is the intensity of the refracted ray?____88ish____ ◆ What is the intensity of the reflected ray?__12ish_____ 4. Change the upper medium to glass. Change the bottom medium to air. ◆ Use the protractor to measure the critical angle.___43__ (Remember to measure from the normal, not the boundary.) ◆ What is the intensity of the reflected ray? ___100%_____ ◆ Now use the shown indexes of refraction with Snell’s Law to check your measured critical angle. Show all work below. 5. Hit the “Reset All” button. 6. Make the top medium glass and the bottom medium water. ◆ Using the protractor, measure the critical angle for light going from glass into water. 64ish ◆ Use the indexes of refraction and Snell’s Law to support this measurement. 7. Click the >Prism Break tab at the top of the page. Choose a shape. Familiarize yourself with the different options. Notice that you can rotate each prism by clicking and dragging the metallic handle on the corner of the prism. You can also rotate the light source itself. You can even make the protractor larger! ◆ Use a white light source and break it apart into the colors. Complete sketches of two different prisms breaking white light into it the colors. Include the normal at each interface in your sketch. 8. Click on the >More Tools tab at the top of the page. Make air the top medium and Mystery A the bottom medium. ◆ Is the wavelength the same, longer, or shorter in Mystery A as in air? _shorter_ ◆ Is the frequency the same, higher, or lower in Mystery A as in air? _same ◆ Is the velocity the same, faster, or slower in Mystery A as in air? _slower ◆ Will Mystery A’s n be the same with any wavelength of light? _no_ ◆ Determine n for Mystery A. Show your reasoning. 2.4ish ◆ Find a student who had a different method of determining n. Have them explain their reasoning. Ask at least one question and make them answer. The other student can initial here._______ ◆ Now explain your reasoning to this student. They must ask you a question and you must justify your reasoning. Initial his/her paper. 9. Set the media to Mystery A and Mystery B. ◆ Which medium is more optically dense? __A___ How do you know? ◆ You can change any settings. What is n for Mystery B? 1.41How do you know? 10. Create a question involving this simulation. Write the question here. Have another student show how they would use the simulation to answer your question. When they have sufficiently answered your question, initial their paper in this blank. _________________

Snell’s Law Simulation

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