Uploaded January 2019 | Updated September 2026, 3 weeks ago
When copper atoms are heated their electrons move to excited states. When those electrons relax back to a ground state, they give back their energy in form of green visible light. It's a green fireball!
When copper atoms are heated their electrons move to excited states. When those electrons relax back to a ground state, they give back their energy in form of green visible light. It's a green fireball!
