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    • The Enkomi Silver Cup - Nature

      Nature· 12 hours ago

      The suggestion that the black is derived from an inlay of copper is interesting, especially coming from the Department of Mineralogy of the British Museum (Natural History ...

    • Image Force in Rectifiers - Nature

      Nature· 13 hours ago

      THEORETICAI current-voltage characteristics of copper oxide and selenium rectifiers have been obtained by integrating the so-called diffusion equation1. The result so obtained ...

    • 5 Copper Coins Worth A Lot Of Money

      5 Copper Coins Worth A Lot Of Money

      GOBankingRates via Yahoo Finance UK· 3 days ago

      The combination of "copper" and "penny" might not seem like the best formula for valuable coins considering that you can find higher denominations in...

    • Electro-Metallurgy - Nature

      Nature· 10 hours ago

      ANY metallurgical process which reduces the cost of production as compared with older processes for effecting similar results must of necessity prove of great commercial importance. If, too, ...