purification furnace
41niobium processing — Introduction preparation of the ore for use in various products. Niobium (Nb) has a body centred cubic (bcc) crystal structure and a melting point of 2,468° C (4,474° F). Of the refractory metals, it has the lowest density and best… …
42GALUT — (Golah) (Heb. גָּלוּת, גּוֹלָה), exile. The Concept The Hebrew term galut expresses the Jewish conception of the condition and feelings of a nation uprooted from its homeland and subject to alien rule. The term is essentially applied to the… …
43Alchemy — Alchemist redirects here. For other uses, see Alchemist (disambiguation). For other uses, see Alchemy (disambiguation). Page from alchemic treatise of Ramon Llull, 16th century Alchemy is an influential philosophical tradition whose early… …
44Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test …
45Tellurium — (pronEng|tɪˈlʊəriəm/, /tɛl ) is a chemical element that has the symbol Te and atomic number 52. A brittle silver white metalloid which looks like tin, tellurium is chemically related to selenium and sulfur. Tellurium is primarily used in alloys… …
46Sterling, Massachusetts —   Town   Sterling Town Common …
47Aluminium oxide — Alumina redirects here. For the company, see Alumina Limited. This article is about aluminium(III) oxide Al2O3. For other uses, see Aluminium oxide (disambiguation). Aluminium oxide …
48Fire temple — Part of a series on Zoroastrianism Portal Primary topics Zoroa …
49Chemical transport reaction — In chemistry, a chemical transport reaction describes a process for purification and crystallization of non volatile solids. The process is also responsible for certain aspects of mineral growth from the effluent of volcanoes. The technique is… …
50chlorine — chlorinous, adj. /klawr een, in, klohr /, n. a halogen element, a heavy, greenish yellow, incombustible, water soluble, poisonous gas that is highly irritating to the respiratory organs, obtained chiefly by electrolysis of sodium chloride brine:… …
