RGB Light Color Mixing

Red+green, green+blue, and all three produce new light colors including white. Ask students to predict what will happen. Overlap colored beams in different combinations. Key idea: Light colors add together differently from paint colors. Ask: What color appears when all three overlap? Safety and cleanup: Use low-power LEDs; no lasers. https://www.google.com/search?q=%22RGB%20Light%20Color%20Mixing%22%20science%20demonstration%20experiment