How is light created?
Since light is around us everywhere we should understand how it is created, in all its forms. Simply put, all forms of E.M. radiation are created when an atom or molecule drops from a higher energy state to a lower one. The loss of energy which occurs is emitted in the form of radiation with an energy which exactly matches this drop.
|When the electron gains energy it moves to a higher energy level, then drops back to the ground state releasing its excess energy as light.The upper animation shows how blue (higher energy) light and the animation to the left shows how red (lower energy)light is created.|
|Visible light is created by electrons within atoms in an excited state returning to the ground state (a lower energy configuration).|