natural graphite

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• Graphite — For other uses, see Graphite (disambiguation). Graphite Graphite specimen General Category Native element mineral …   Wikipedia

• Natural uranium — (NU) refers to refined uranium with the same isotopic ratio as found in nature. It contains 0.7 % uranium 235, 99.3 % uranium 238, and a trace of uranium 234 by weight. In terms of the amount of radioactivity, approximately 2.2 %… …   Wikipedia

• Natural resource economics — Economics …   Wikipedia

• Natural nuclear fission reactor — Geological situation in Gabon leading to natural nuclear fission reactors 1. Nuclear reactor zones 2. Sandstone 3. Uranium ore layer 4. Granite A natural nuclear fission reactor is a uranium deposit where analysis of isotope ratios has shown that …   Wikipedia

• Natural scientific research in Canada — This article outlines the history of natural scientific research in Canada, including mathematics, physics, astronomy, space science, geology, oceanography, chemistry, biology, medical research and psychology. The social sciences are not treated… …   Wikipedia

• Nuclear graphite — Core graphite from the Molten Salt Reactor Experiment Nuclear graphite is any grade of graphite, usually electro graphite, specifically manufactured for use as a moderator or reflector within nuclear reactors. Graphite is an important material… …   Wikipedia

• Carbon — (), but as most compounds with multiple single bonded oxygens on a single carbon it is unstable.] Cyanide (CN–), has a similar structure, but behaves much like a halide ion (pseudohalogen). For example it can form the nitride cyanogen molecule… …   Wikipedia

• Dry lubricant — Dry lubricants or solid lubricants are materials which despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid media. Such lubricants, including materials such as …   Wikipedia

• pencil drawing — Drawing executed with a pencil, an instrument made of graphite enclosed in a wood casing. Though graphite was mined in the 16th century, its use by artists is not known before the 17th century. In the 17th–18th century, graphite was used… …   Universalium

• Carbon nanocone — SEM images of a carbon disk (top left image) and free standing hollow carbon nanocones produced by pyrolysis of heavy oil in the Kvaerner Carbon Black Hydrogen Process. Maximum diameter is about 1 micrometer.[1] …   Wikipedia

• Noir de carbone — Photographie réalisée au Microscopie électronique en transmission de noir de carbone obtenu à partir de la pyrolyse de charbon Général …   Wikipédia en Français