Moiré Motion Patterns

Large waves and apparent motion appear. Ask students to predict what will happen. Slide or rotate one pattern over the other. Key idea: Overlapping repeating patterns create interference-like beat patterns. Ask: Where did the big moving pattern come from? Safety and cleanup: Handle sheets carefully. https://www.google.com/search?q=%22Moir%C3%A9+Motion+Patterns%22+science+demonstration+experiment