Carbon brush

a small block of carbon used to convey current between the stationary and moving parts of an electric generator, motor, etc
Historical Examples

When replacing the block, care must be exercised in pushing the carbon brush into the socket.
Aviation Engines Victor Wilfred Pag


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    the process of trapping carbon dioxide at its emission source, transporting it to a usually underground storage location, and isolating it there: New carbon capture technologies provide an additional weapon against global warming. Contemporary Examples The coal industry says carbon-capture technology is unproven and would make building new plants uneconomical. Obama Administration Issues New Rules […]

  • Carbon copy

    a duplicate of anything written or typed, made by using a photocopier or, formerly, by using carbon paper. Abbreviation: cc. a copy of an email or other electronic document that is sent to one or more people in addition to the primary addressee. Abbreviation: cc. a near or exact duplicate of a given person or […]

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    a permit that gives a company, country, etc., the right to emit a specified amount of carbon compounds into the atmosphere, and may be purchased if emissions are expected to exceed a quota or sold if the quota is not reached: Companies can accumulate carbon credits by funding new forest growth. noun a certificate showing […]

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    Ecology. the circulation of carbon atoms in the biosphere as a result of photosynthetic conversion of carbon dioxide into complex organic compounds by plants, which are consumed by other organisms: the carbon returns to the atmosphere in the form of carbon dioxide as a result of respiration, decay by fungi, bacteria, etc., and combustion of […]

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