spin degeneracy factor

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• Electric field screening — Screening is the damping of electric fields caused by the presence of mobile charge carriers. It is an important part of the behavior of charge carrying fluids, such as ionized gases (classical plasmas) and conduction electrons in semiconductors… …   Wikipedia

• Electric-field screening — See also: Electromagnetic shielding Screening is the damping of electric fields caused by the presence of mobile charge carriers. It is an important part of the behavior of charge carrying fluids, such as ionized gases (classical plasmas) and… …   Wikipedia

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• Pauli exclusion principle — The Pauli exclusion principle is a quantum mechanical principle formulated by Wolfgang Pauli in 1925. It states that no two identical fermions may occupy the same quantum state simultaneously . A more rigorous statement of this principle is that …   Wikipedia

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