metal impurity
31Carbon nanotube — Not to be confused with Carbon fiber. Part of a series of articles on Nanomaterials Fullerenes …
32Donald Eigler — Don Eigler and Neon in front of one of the two Scanning Tunneling Microscopes at Almaden Donald M. Eigler is a physicist and IBM Fellow at the IBM Almaden Research Center. On September 28, 1989 he achieved a landmark in humankind’s ability to… …
33aluminum processing — Introduction preparation of the ore for use in various products. Aluminum, or aluminium (Al), is a silvery white metal with a melting point of 660° C (1,220° F) and a density of 2.7 grams per cubic centimetre. The most abundant… …
34Smelting — For other uses, see Smelt (disambiguation). Electric phosphate smelting furnace in a TVA chemical plant (1942) Smelting is a form of extractive metallurgy; its main use is to produce a metal from its ore. This includes iron extraction from …
35Anderson orthogonality theorem — The Anderson orthogonality theorem is a theorem in physics by the physicist P. W. Anderson. It relates to the introduction of a magnetic impurity in a metal. When a magnetic impurity is introduced into a metal, the conduction electrons will tend… …
36ABLUTION — (Heb. טְבִילָה; immersion ), act of washing performed to correct a condition of ritual impurity and restore the impure to a state of ritual purity. The ritually impure (or unclean) person is prohibited from performing certain functions and… …
37613 Mitzvot — Part of a series of articles on Jews and Judaism …
38Recrystallization — (see also crystallization) is a physical process that has meanings in chemistry, metallurgy and geology.ChemistryIn chemistry, recrystallization is a procedure for purifying compounds. The most typical situation is that a desired compound A is… …
39Spray forming — Spray forming, also known as spray casting, spray deposition[1] and in situ compaction,[2] is a method of casting near net shape metal components with homogeneous microstructures via the deposition of semi solid sprayed droplets onto a shaped… …
40Degenerate semiconductor — This article is about highly doped semiconductors that begin to show metal like electronic behavior. For other uses, see Degeneracy. A degenerate semiconductor is a semiconductor with such a high level of doping that the material starts to act… …
