In a Brillouin zone, the constant-energy surface represents the loci of all the 
-points (that is, all the crystal momentum values) that have the same energy. Fermi surface is a special constant-energy surface that separates the unfilled orbitals from the filled ones at zero kelvin.
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Constant energy surface — In a Brillouin zone, the constant energy surface represents the loci of all the vec{k} points (that is, all the crystal momentum values) that have the same energy. Fermi surface is a special constant energy surface that separates the unfilled… … Wikipedia
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energy conversion — ▪ technology Introduction the transformation of energy from forms provided by nature to forms that can be used by humans. Over the centuries a wide array of devices and systems has been developed for this purpose. Some of these energy … Universalium
Energy — This article is about the scalar physical quantity. For other uses, see Energy (disambiguation). Energetic redirects here. For other uses, see Energetic (disambiguation) … Wikipedia
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Surface diffusion — [ adatom diffusing across a square surface lattice. Note the frequency of vibration of the adatom is greater than the jump rate to nearby sites. Also, the model displays examples of both nearest neighbor jumps (straight) and next nearest neighbor … Wikipedia
