Technology

Notable Women, an AR app that adds 100 historic American women to U.S. currency

26 September, 2018
How are coins pressed from shiny discs of malleable metal at The Royal Mint? Nickel-brass alloy, graphite, sulfuric acid, ball bearings, heat, water, and a factory full of machines prepare these blanks before engraved... On April 9, 1939, legendary African-American contralto Marian Anderson sang at the Lincoln Memorial, a concert that was arranged after Daughters of the Amer
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