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The discovery and exploitation of the Bolivian tin belt in the 19th century made tin far cheaper, although forecasts for future supplies are less positive. There are as many as 400 different copper and copper alloy compositions loosely grouped into the categories: copper, high copper alloy, brasses, bronzes, copper nickels, copper–nickel ...
Band theory derives these bands and band gaps by examining the allowed quantum mechanical wave functions for an electron in a large, periodic lattice of atoms or molecules. Band theory has been successfully used to explain many physical properties of solids, such as electrical resistivity and optical absorption , and forms the foundation of the ...
An explosively formed penetrator ( EFP ), also known as an explosively formed projectile, a self-forging warhead, or a self-forging fragment, is a special type of shaped charge designed to penetrate armor effectively, from a much greater standoff range than standard shaped charges, which are more limited by standoff distance.
Heat exchangers using copper and its alloys have evolved along with heat transfer technologies over the past several hundred years. Copper condenser tubes were first used in 1769 for steam engines. Initially, the tubes were made of unalloyed copper. By 1870, Muntz metal, a 60% Cu-40% Zn brass alloy, was used for condensers in seawater cooling.
The Rods' sound differed considerably from Elf, adopting a more traditional heavy metal sound compared with the boogie-rock sound that Elf preferred. [3] Their first album was originally released independently as Rock Hard in 1980 and the following year the band was signed by Arista Records , who reordered the album tracks and released it ...
Copper-clad steel ( CCS ), also known as copper-covered steel or the trademarked name Copperweld is a bi-metallic product, mainly used in the wire industry that combines the high mechanical strength of steel with the conductivity and corrosion resistance of copper . It is mainly used for grounding purposes, line tracing to locate underground ...
Eddie and the Hot Rods are a pub rock band from Essex founded in 1975. They are best known for their 1977 UK top ten hit "Do Anything You Wanna Do", released under the shortened name Rods. The group broke up in 1985, but reformed in 1996. Singer Barrie Masters was the only constant member until his death in 2019.
The Old Copper complex or Old Copper culture is an archaeological culture from the Archaic period of North America's Great Lakes region. Artifacts from some of these sites have been dated from 7500 to 1000 BCE. [1] [page needed] It is characterized by widespread copper artifacts, including tools and weapons, as well as ornamental objects.