The actual concentration of electrons is typically very dilute, and so (unlike in metals) it is possible to think of the electrons in the conduction band of a semiconductor as a sort of classical ideal gas, where the electrons fly around freely without being subject to the Pauli exclusion principle.
Concentratia obisnuita de electroni este foarte scazuta, si (spre deosebire de metale) este posibil sa ne gandim la electronii dintr-o banda de conductie a unui semiconductor ca la un fel de “gaz ideal”, unde electronii zboara in jur liberi fara a se supune Principiului Pauli.