metal impurity
61Scanning tunneling microscope — Image of reconstruction on a clean Gold(100) surface …
62Kult ov Azazel — Datos generales Origen Fort Lauderdale, Florida,  Estados Unidos …
63Semiconductor — Citations missing|date=March 2008A semiconductor is a solid material that has electrical conductivity in between a conductor and an insulator; it can vary over that wide range either permanently or dynamically. [. They are used in many… …
64Sapphire — For other uses, see Sapphire (disambiguation). Sapphire The 423 carat (85 g) blue Logan sapphire General Category Oxide mineral …
65Zone melting — is a method of separation by melting in which a molten zone traverses a long ingot of impure metal or chemical. In its common use for purification, the molten region melts impure solid at its forward edge and leaves a wake of purer material… …
66Polling (metallurgy) — Polling in metallurgy is the process of refining a crude metal which has its own oxide as impurity. The molten metal is stirred with logs of green wood in a tank. The heat from the molten metal decomposes the wood which liberates hydrocarbon… …
67Caesium chloride — Caesium chloride …
68Joe Payne — Joseph Joe Payne was born in Tampa, Florida in 1984. He is a Heavy metal bassist and guitarist. Joe Payne currently plays bass in the metal band Divine Heresy along with ex Fear Factory guitarist Dino Cazares, ex Vital Remains and Hate Eternal… …
69List of purification methods in chemistry — Purification in a chemical context is the physical separation of a chemical substance of interest from foreign or contaminating substances. The following list of chemical purification methods should not be considered exhaustive. * Filtration is a …
70Diamond flaws — Contents 1 External flaws 1.1 Blemishes 1.2 Scratches 1.3 …
