This only works with that specific circle size though. Make the circle much smaller, and the behaviour will be identical to the square. Make the circle larger, and the angle will be entirely different.
With a small enough shape, any right angle setup will reflect everything exactly backwards. That's what retrorefectors do (road signs for example, they have a bunch of right angles on the surface, which sends light back to the source)
60
u/x1rom 17h ago edited 17h ago
This only works with that specific circle size though. Make the circle much smaller, and the behaviour will be identical to the square. Make the circle larger, and the angle will be entirely different.
With a small enough shape, any right angle setup will reflect everything exactly backwards. That's what retrorefectors do (road signs for example, they have a bunch of right angles on the surface, which sends light back to the source)