Copper

Copper is a chemical element with symbol Cu (from Latin: cuprum) and atomic number 29. It is a soft, malleable and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a reddish-orange color. It is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys.

Copper is found as a pure metal in nature, and this was the source of the first metal to be used by humans, ca. 8,000 BC; it was the first metal to be smelted from its ore, ca. 5,000 BC; it was the first metal to be cast into a shape in a mold, ca. 4,000 BC; and it was the first metal to be purposefully alloyed with another metal, tin, to create bronze, ca. 3,500.

In the Roman era, copper was principally mined on Cyprus, the origin of the name of the metal from aes сyprium (metal of Cyprus), later corrupted to сuprum, from which the words copper (English), cuivre (French), Koper (Dutch) and Kupfer (German) are all derived. Its compounds are commonly encountered as copper(II) salts, which often impart blue or green colors to minerals such as azurite, malachite and turquoise and have been widely used historically as pigments. Architectural structures built with copper corrode to give green verdigris (or patina). Decorative art prominently features copper, both by itself and in the form of pigments.

Agkistrodon contortrix mokasen

Agkistrodon contortrix mokasen is a venomous pit viper subspecies found in the eastern United States.

Description

The northern copperhead grows to an average length of 61-91 cm (24-36 in), with a maximum of 135 cm (53 in).

The dorsal scales are weakly keeled. The anal plate is single. The subcaudals are single, at least anteriorly.

The color pattern consists of an hourglass pattern that runs the length of the body. From above, a series of dark chestnut crossbands look narrow in the center and wider on the sides. Between the crossbands, small dark spots are often present. There are dark rounded spots at the sides of the belly. The head is a copper-red color. Juvenile specimens are lighter in color, have a yellow tail tip, and a narrow dark line that runs through the eye that divides the darker head from the lighter colored labial scales.

Common names

Northern copperhead, copperhead, resident copperhead, highland moccasin, beech-leaf snake, chunk head, copper (adder), copper-bell, copper belly, copperhead moccasin, copperhead viper, copper snake, copper viper, deaf adder, deaf snake, dumb rattlesnake, harlequin snake, hazel head, North American copperhead snake, northern copperhead, pilot, poplar leaf, rattlesnake pilot, rattlesnake's mate, red adder, red eye, red snake, red viper, thunder snake, upland moccasin, white oak snake, adder.

Copper (disambiguation)

Copper is a reddish-colored metallic element, widely used in manufacturing and industry.

Copper may also refer to:

Biology

Obsolescence

Obsolescence is the state of being which occurs when an object, service, or practice is no longer wanted even though it may still be in good working order. Obsolescence frequently occurs because a replacement has become available that has, in sum, more advantages than the inconvenience related to repurchasing the replacement. Obsolete refers to something that is already disused or discarded, or antiquated. Typically, obsolescence is preceded by a gradual decline in popularity.

Consequences

Driven by rapid technological changes, new components are developed and launched on the market with increasing speed. The result is a dramatic change in production methods of all components and their market availability. A growing industry sector is facing issues where life cycles of products no longer fit together with life cycles of required components. This issue is known as obsolescence, the status given to a part when it is no longer available from its original manufacturer. The problem of obsolescence is most prevalent for electronics technology, wherein the procurement lifetimes for microelectronic parts are often significantly shorter than the manufacturing and support life cycles for the products that use the parts. However, obsolescence extends beyond electronic components to other items, such as materials, textiles, and mechanical parts. In addition, obsolescence has been shown to appear for software, specifications, standards, processes, and soft resources, such as human skills. It is highly important to implement and operate an active management of obsolescence to mitigate and avoid extreme costs.

List of Teenage Mutant Ninja Turtles (2003 TV series) episodes

This is a list of episodes of the Teenage Mutant Ninja Turtles 2003 TV series. The series debuted on February 8, 2003 on the Fox Network as part of Fox's 4Kids TV Saturday morning lineup, and ended on March 27, 2010. The series was produced by Mirage Studios, which owned one third of the rights to the show.

Series

Season One: 2003

Teenage Mutant Ninja Turtles' first season originally aired between February 4, 2003 and November 1, 2003, beginning with the "Things Change" episode. The episodes were released in two separate volumes, the first on May 22, 2007 with twelve episodes, and the second on September 18, 2007 with fourteen episodes.

Season Two: 2003–04

The Shredder returns in season 2 and is revealed to be an Utrom named Ch'rell. Karai the daughter of the Shredder makes her first appearance in this season.

Season Three: 2004–05

Many of the Ninja Turtles enemies return in season 3. This is the final season that includes Utrom Shredder.

Obsolete (album)

Obsolete (styled °BSΩLE+e on the album cover) is the third studio album by American heavy metal band Fear Factory, released on July 28, 1998. Conceptually, it is a sequel to 1995's Demanufacture. With the success of its fourth single, "Cars," a Gary Numan cover that featured Numan himself on vocals, Obsolete would break Fear Factory into the mainstream and remain their highest selling album.

Background and recording

The group began writing and pre-production in late 1997. This came to a sudden halt when Ozzy Osbourne invited Fear Factory to open for the reunited Black Sabbath at two sold-out stadium shows at the Birmingham NEC. Fear Factory also headlined their own concert on December 7 in London. The band intended to return to work on their album in Los Angeles until late January when they would record in Vancouver with producers Rhys Fulber and Greg Reely. The working title Obsolete was announced during this time although not certain to remain.

In a first, guitarist Dino Cazares tuned down to A for this album.Gary Numan appears at the beginning of "Obsolete" and on the cover of his own song "Cars."