Please only use references for this from the textbook called conceptual physics 12th Edition by Paul G. Hewitt.

Open https://phet.colorado.edu/sims/html/bending-light/latest/bending-light_en.html

Click on the "Intro" applet and play around with the applet.

1. Turn on the laser.
   1. What happens to the ray as it hits the interface between air and water. Explain your answer. How does our textbook back up your explanations? Include relevant page numbers as you summarize the relevant textbook information.

[insert text here]

1. Include a screenshot of the entire screen, showing the parameters chosen.

[place screenshot here]

1. Move the laser to a different location (the laser beam cannot be horizontal or vertical).
   1. Use the protractor to measure the angle of incidence and the angle of reflection. Are they what you expect? Explain your answer. How does our textbook back up your explanations? Include relevant page numbers as you summarize the relevant textbook information.

[insert text here]

1. Include a screenshot of the entire screen, showing how you placed the protractor to measure the angles.

[place screenshot here]

1. Keeping the laser fixed, change the lower material (currently water) by slowly sliding the bar to a value slightly to the left of water.
   1. What happens to the refracted ray as you slide the bar to the left? Now slowly slide the bar to a value slightly to the right of water. What happens to the ray as you slide the bar to the right? Explain your answers. How does our textbook back up your explanations? Include relevant page numbers as you summarize the relevant textbook information.

[insert text here]

1. Include screenshots of the entire screen, showing the parameters chosen.

[place screenshots here]

1. Play around with different indices of refraction for both materials and different incident angles.
   1. Is it possible to shine the laser on the interface so that all the light is reflected, and no light goes through? Explain your answer. How does our textbook back up your explanations? Include relevant page numbers as you summarize the relevant textbook information.

[insert text here]

1. Include a screenshot of the entire screen, showing the parameters chosen.

[place screenshot here]

1. Try something else with the applet and describe and explain your observations. Include at least one screenshot and be creative!

[insert text and place screenshot here]