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  2. Table of specific heat capacities - Wikipedia

    en.wikipedia.org/wiki/Table_of_specific_heat...

    A Assuming an altitude of 194 metres above mean sea level (the worldwide median altitude of human habitation), an indoor temperature of 23 °C, a dewpoint of 9 °C (40.85% relative humidity), and 760 mmHg sea level–corrected barometric pressure (molar water vapor content = 1.16%).

  3. Copper loss - Wikipedia

    en.wikipedia.org/wiki/Copper_loss

    Copper loss is the term often given to heat produced by electrical currents in the conductors of transformer windings, or other electrical devices. Copper losses are an undesirable transfer of energy , as are core losses , which result from induced currents in adjacent components.

  4. International Annealed Copper Standard - Wikipedia

    en.wikipedia.org/wiki/International_Annealed...

    The International Annealed Copper Standard (IACS) is a standard established in 1914 by the United States Department of Commerce. [1] It is an empirically derived standard value for the electrical conductivity of commercially available copper .

  5. Is Copper Worth Your Time? - AOL

    www.aol.com/2013/09/28/is-copper-worth-your-time...

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  6. Coinage metals - Wikipedia

    en.wikipedia.org/wiki/Coinage_metals

    Pre-1992 British pennies were made of 97% copper; but as of 2008, based on the price of copper, the value of a penny from this period is 1.5 new-pence. Modern British pennies are now made of copper-plated steel. Cupronickel, a base metal alloy with varying proportions of copper and nickel, was introduced as a cheaper alternative for silver in ...

  7. Copper in renewable energy - Wikipedia

    en.wikipedia.org/wiki/Copper_in_renewable_energy

    Copper usage intensity is high because turbines in wind generation farms are spread over large areas. [46] In land-based wind farms, copper intensity can range between 5,600 and 14,900 pounds per MW, depending on whether the step-up transformers have copper or aluminium conductors.

  8. LME Copper - Wikipedia

    en.wikipedia.org/wiki/LME_Copper

    Despite the small share of physical copper associated with LME Copper contracts, their prices act as reference prices for physical global copper transactions. [5] This practice started in 1966, when Zambia, Chile, and most Copper-producing countries abandoned fixed price copper contracts, and announced that they would set copper contract prices based the average monthly price of the nearest ...

  9. Qing dynasty coinage - Wikipedia

    en.wikipedia.org/wiki/Qing_dynasty_coinage

    The standard copper-alloy was 60% copper and 40% lead and/or zinc, yet diverse market conditions dictated what would be the de facto composition. [16] This official composition was officially changed over time, initially it was at a ratio of 3:2 (3 parts copper to 2 parts lead and zinc). [16]