(c) The laser pointer emits light because electrons in the
Chapter , Problem 6.26c(choose chapter or problem)
(c) The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper excited state. When the electrons return to the ground state, they lose the excess energy in the form of 532-nm photons. What is the energy gap between the ground state and excited state in the laser material?
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