Graphite n. (Min.) Native carbon in hexagonal crystals, also foliated or granular massive, of black color and metallic luster, and so soft as to leave a trace on paper. It is used for pencils (improperly called lead pencils), for crucibles, and as a lubricator, etc. Often called plumbago or black lead.
Graphite battery (Elec.), a voltaic battery consisting of zinc and carbon in sulphuric acid, or other exciting liquid.
... electric lamp was so constructed as to yield its maximum illuminating power. In essence, its light was generated in a vacuum, insuring both its steadiness and intensity. Such a vacuum also reduced wear on the graphite points between which the luminous arc expanded. This was an important savings for Captain Nemo, who couldn't easily renew them. But under these conditions, wear and tear ... — 20000 Leagues Under the Seas • Jules Verne Read full book for free!
... necessitated practically as great labor as did the first edition, the type being necessarily set afresh. Now, however, the type is set up and a mold of it is taken in wax. This mold is coated with graphite to make it a conductor and is then suspended in a bath of copper sulphate, side by side with a slab of pure copper. Current is sent through the solution as described in Section 293, until a thin coating of copper has been deposited ... — General Science • Bertha M. Clark Read full book for free!
... machine building, electric power, chemicals; mining (coal, iron ore, magnesite, graphite, copper, zinc, lead, and precious metals), ... — The 2004 CIA World Factbook • United States. Central Intelligence Agency Read full book for free!