- Steve Phelps
A modification of Mad Mirrors found at Brilliant.org https://brilliant.org/community-problem/mad-mirrors-2/?group=3mAPmjyo8OTA Two mirrors represented by thicker black lines in the plane. The angle between the mirrors is controlled by the slider. The two green points set the initial light path, which it the red line. The small magenta on the mirrors are the points where the light reflects off the mirror. The thin dashed lines are perpendiculars to the mirrors used to reflect the light rays. Drag the slider slowly and drag the green points slowly and observe the patterns. What patterns can you predict.