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2. Compression fitting - Wikipedia

   en.wikipedia.org/wiki/Compression_fitting

   A compression fitting 15 mm isolating valve. A compression fitting is a fitting used in plumbing and electrical conduit systems to join two tubes or thin-walled pipes together. . In instances where two pipes made of dissimilar materials are to be joined (most commonly PVC and copper), the fittings will be made of one or more compatible materials appropriate for the connect

3. Lost-wax casting - Wikipedia

   en.wikipedia.org/wiki/Lost-wax_casting

   Illustration of stepwise bronze casting by the lost-wax method. Lost-wax casting – also called investment casting, precision casting, or cire perdue (French: [siʁ pɛʁdy]; borrowed from French) [1] – is the process by which a duplicate sculpture (often a metal, such as silver, gold, brass, or bronze) is cast from an original sculpture.

4. Copper - Wikipedia

   en.wikipedia.org/wiki/Copper

   Copper. face-centered cubic (fcc) (cF4) Copper is a chemical element; it has 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 pinkish-orange color. Copper is used as a conductor of heat and electricity ...

5. Superconductivity - Wikipedia

   en.wikipedia.org/wiki/Superconductivity

   This current effectively forms an electromagnet that repels the magnet. Superconductivity is a set of physical properties observed in superconductors: materials where electrical resistance vanishes and magnetic fields are expelled from the material. Unlike an ordinary metallic conductor, whose resistance decreases gradually as its temperature ...

6. Getting A Copper IUD Is Actually Better Than Taking Plan B ...

   www.aol.com/getting-copper-iud-actually-better...

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7. Copper conductor - Wikipedia

   en.wikipedia.org/wiki/Copper_conductor

   Copper is the electrical conductor in many categories of electrical wiring. [3][4] Copper wire is used in power generation, power transmission, power distribution, telecommunications, electronics circuitry, and countless types of electrical equipment. [5] Copper and its alloys are also used to make electrical contacts.