Glow Powder Keeps Glowing

Object continues glowing after light is removed. Ask students to predict what will happen. Charge under light, then darken room. Key idea: Some excited electrons become trapped and release energy slowly. Ask: Why does this glow last longer than tonic water? Safety and cleanup: Use sealed non-toxic materials. https://www.google.com/search?q=%22Glow+Powder+Keeps+Glowing%22+science+demonstration+experiment