COLUMBIA, S.C. — This experiment is a chemistry experiment that involves a reaction between copper and oxygen, also know as an oxidation reaction. To do this experiment, you will need: pennies a sheet ...

Solar cells and photocathodes made of copper oxide might in theory attain high efficiencies for solar energy conversion. In practice, however, large losses occur. Now researchers has been able to use ...

Shiny, reddish copper was the first metal manipulated by humans, and it remains an important metal in industry today. The oldest metal object found in the Middle East consists of copper; it was a tiny ...

Special to The New York Times. TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print ...

The semiconductor industry is in the midst of a massive technological change, converting to mass-producing chips with copper, rather than aluminum, wires. The weird part: Almost no one seems to be ...