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Copper is a chemical element with the symbol Cu (from Latin: cuprum) and the atomic number of 29. It is easily recognisable, due to its distinct red-orange color.Copper also has a range of different organic and inorganic salts, having varying oxidation states ranging from (0,I) to (III).
1.3 Copper penny. 1.4 Copper rose. ... Download QR code; Wikidata item; Print/export ... The first recorded use of copper red as a color name in English was in 1590. [3]
Tin-silver-copper (Sn-Ag-Cu, also known as SAC), is a lead-free alloy commonly used for electronic solder.It is the main choice for lead-free surface-mount technology (SMT) assembly in the industry, [1] as it is near eutectic, with adequate thermal fatigue properties, strength, and wettability. [2]
Beryllium copper (BeCu), also known as copper beryllium (CuBe), beryllium bronze, and spring copper, is a copper alloy with 0.5–3% beryllium. [1] Copper beryllium alloys are often used because of their high strength and good conductivity of both heat and electricity. [2] It is used for its ductility, weldability in metalworking, and machining ...
Copper(I) oxide or cuprous oxide is the inorganic compound with the formula Cu 2 O. It is one of the principal oxides of copper, the other being copper(II) oxide or cupric oxide (CuO).The compound can appear either yellow or red, depending on the size of the particles. [2]
Copper(I) oxide (cuprous oxide, Cu 2 O) Copper(II) oxide (cupric oxide, CuO) Copper peroxide (CuO 2), a hypothetical compound; Paramelaconite (copper(I,II) oxide, Cu 4 O 3) Copper(III) oxide (Cu 2 O 3) does not exist although Cu(III) is a component of cuprate superconductors; Copper(IV) oxide (CuO 2) has been proposed to exist in the gas phase [2]
The earliest examples of color codes in use are for long-distance communication by use of flags, as in semaphore communication. [1] The United Kingdom adopted a color code scheme for such communication wherein red signified danger and white signified safety, with other colors having similar assignments of meaning.
Cooper at the Spain premiere of Silver Linings Playbook in 2013. Bradley Cooper is an American actor and filmmaker. He began his career by appearing in an episode of the sitcom Sex and the City (1999) and as the host of the tourism show Globe Trekker the following year.
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