alloy
Fiber optic cables, made from glass, are gradually being used to replace copper telephone and cable television lines. It will be some time before all the lines are fiber optic, however.
copper
Conductors are materials that allow the flow of electricty in a circuit. Examples are metals, the two most common used being copper and aluminum.
The telephone is being used by anyone from children and adults,
Copper is extracted from minerals; but the body of a human being contain copper because copper is indispensable for the life.
what is the good and the bad parts of being a telephone operator
Copper chloride being a salt is not ductile.
Throughout the centuries, the roman currency saw many changes. Gold, silver, brass and copper being the materials used. Their shape and minting changing frequently.
Malleability refers to a metal's quality of easily being shaped into something else without breaking. Some products that are manufactured because of the malleability of their materials are gold foil, aluminum beer cars and copper wire.
copper is too expensive and limited.
A material that passes current easily is called a conductor. The best conductors are metals.
At ordinary temperatures, the element that's the best conductor of electricity is silver, with the second best being copper. At very low temperatures, some materials become superconducting. Superconducting materials are all perfect conductors of electricity, with no resistance at all.