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Noble metals Reference Libraries

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Molybdenite
2005-05-26 08:39:47

Molybdenite is a mineral of molybdenum disulfide, MoS2. Similar in appearance and feel to graphite, molybdenite has a lubricating effect which is produced by its structure of close-spaced parallel cleavage planes. Finely powdered MoS2, with particle sizes in the 1-100 µm range, is a common technical dry lubricant. It is also often mixed into various oils or greases, which allows mechanisms...

Platinum
2005-05-25 18:52:44

Platinum is a chemical element in the periodic table that has the symbol Pt and atomic number 78. A heavy, malleable, ductile, precious, gray-white transition metal, platinum is resistant to corrosion and occurs in some nickel and copper ores along with some native deposits. Platinum is used in jewelry, laboratory equipment, electrical contacts, dentistry, and anti-pollution devices in...

Silver
2005-05-25 17:25:52

Silver is a chemical element in the periodic table that has the symbol Ag (from the traditional abbreviation from the Latin Argentum) and atomic number 47. A soft white lustrous transition metal, silver has the highest electrical and thermal conductivity of any metal and occurs in minerals and in free form. This metal is used in coins, jewelry, tableware, and photography. Notable...

Word of the Day
coulisse
  • One of the side scenes of the stage in a theater, or the space included between the side scenes.
  • The outside stock exchange, or “curb market,” of Paris.
  • A flute or groove on the blade of a sword.
  • A section of stage scenery placed in a wing of a theatre.
The word 'coulisse' comes from a French word meaning "sliding door".
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