I know I can do this on my own but I don’t understand the intrusions.
Move the laser so that the Angle of Incidence (light coming off the pointer) is 30°, just like in the picture above.
→ Enter the Angle of Refraction for 30° in the table below. Toggle between mediums on the right side of the simulation to change the mediums to help you complete the table below.
→ Maneuver the pointer for each Angle of Incidence listed in the table below and enter the angle of refraction for each angle of incidence.
→ Repeat steps #5 and #6 for each angle of incidence to help you complete the table below.