TV Remote Seen by a Camera

Camera often shows blinking light invisible to eyes. Ask students to predict what will happen. Point remote at camera and press buttons. Key idea: Camera sensor can detect near-infrared wavelengths our eyes cannot. Ask: How can the camera see light we can't? Safety and cleanup: Do not rely on front/back camera uniformly; test first. https://www.google.com/search?q=%22TV+Remote+Seen+by+a+Camera%22+science+demonstration+experiment