| http://www.w3.org/ns/prov#value | - Therefore, for some applications, the particles are themselves metal, e.g. tungsten, copper, silver, molybdenum, or nickel, whereas for other applications the particles may comprise a nonconductive material, e.g. glass or ceramic, or a conductive material, e.g. carbon black, which has been at least partially coated with a metal to produce a filler with an appropriate resistivity.
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