About This Lesson
The Pulfrich effect is a really cool optical illusion! It can be easily demonstrated with a pair of sunglasses with one lens missing. When a pendulum swings back and forth, it swings in a straight line. But your eyes can be fooled into thinking it’s moving in a circle! This effect expands beyond the pendulum, as we show. Tags: Little Shop of Physics, Colorado State University, Brian Jones, K-12, Physics
