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Glossary

Terms for Architecture, Green Building & Energy


This glossary includes more than 300 solar terms, as well as hundreds of additional sustainable design and construction terms.

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Fermi Level

Definition: Energy level at which the probability of finding an electron is one-half. In a metal, the Fermi level is very near the top of the filled levels in the partially filled valence band. In a semiconductor, the Fermi level is in the band gap.