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Let Us Apply You are doing Good! Now, let us perform the last activity for you to have a better understanding of our lessons. Activity 4: Double Slit Experiment Using the suggested materials try to perform this experiment at home for you to have an actual observations on how electrons behave as a particle and a wave. Answer the following guide questions after you have performed the experiment. Materials: Laser (be careful not to shine this in anyone's eyes) Needle Tape Table White printer paper Dark room Flat wall Procedure: 1. Fold and unfold your sheet of printer paper once so that it can stand upright. 2. . Make a tiny hole in your paper with your needle. 3. Stand your printer paper upright on a table that is at least ten feet away from the wall. 4. Use your tape to mount your laser pointer to a stable object, like a heavy book. Place the mounted laser on the table. 5. Turn your laser on. Adjust the angle of your laser so that it passes through the hole in your paper and onto the wall. What did you see? Is it what you expected to see? 6. Make another hole in your paper right next to the first one so that they're as close together as possible without creating one larger hole. 7 GSC-CID-LRMS-ESSLM, v.r. 02.00, Effective April 21, 2021 7. Adjust your laser so that it now passes through both holes. Observe the shapes created on the wall. What do you see? Was it what you expected to see? 8. Cover one of the holes with a small piece of paper, leaving the other open. How does the projected image on the wall change? Guide Questions: 1. Describe the pattern of light as it passes through; A. One Slit: B: Two Slits: 2. How does the projected image on the wall change when one of the holes was covered? 3. What can you infer from the activity about the behavior of light particles? References Books Flores, M. T., & Medequiso, C. N. (2020). Physical Science Quarter 2-Module 9: Dual Nature of Electrons. Department of Education, Philippines. Cabalo, S. S. (2020). Physical Science Quarter 2- Module 10: The Wave Nature of Light. Department of Education, Philippines. Online References Helmenstine, Anne Marie. "Wave-Particle Duality-Definition Light Acts as Both a Wave and a Particle." February 2, 2019. https://www.thoughtco.com/ definitionof-wave-particle-duality-605947. Jones, Andrew Zimmerman. "Wave-Particle Duality and How it Works." July 3, 2019. https://www.thoughtco.com/wave-particle-duality-2699037. Peshin, Akash. "Wave-Particle Duality: Is an Electron a Particle or a Wave?." December 12, 2019. https://www.scienceabc.com/pure-sciences/louisedebroglies-hyothesis-is-an-electron-a-particle- or-a-wave.html Khan Academy. Retrieved from: https://www.khanacademy.org/test- prep/mcat/physical-processes/light-and-electromagnetic-radiation- questions/a/diffraction-and- constructive-and-destructive-interference HyperPhysics. http://hyperphysics.phy-astr.gsu.edu/hbase/atmos/blusky.html

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