Excited Oxygen Gas
In quantum mechanics, an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than the ground state. The lifetime of a system in an excited state is usually short: spontaneous or induced emission of a quantum of energy (such as a photon or a phonon) usually occurs shortly after the system is promoted to the excited state, returning the system to a state with lower energy (a less excited state or the ground state).
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Keywords: ampoule, emission, emit, emitting, energy, excess, excited, extra, gas, glowing, ground, higher, level, light, lowest-energy, oxygen, photon, plasma, spectra, state
