I've been asking questions to my mom about what is inside the new receiver and then suddenly i asked my mom, what is inside a wire? She didn't know what was inside a wire so i asked if i can post my question on yahoo answers, and then she said yes so i did it.
Under the rubber or plastic coating is - wire - made of metal like copper or aluminum. Sometimes it is a bunch of fine wires bunched together to make up a thicker wire bundle, other times it is one solid piece of wire. House wire is usually solid, things like car wires and stereo wires are made of lots of tiny strands.
thers different types, under the rubber/plastic insulation thers usually copper, but thers also aluminum, thers #1 and #2 copper wire, one is thick 2 is small, ther can be solid or a bunch of thin ones wrapped in a spiral, in the spiral the electricity only uses the outside wires, pretty neat...but fiber optic is glass, they are coved by a main rubber insulation then ther's all the small wires inside wich is also insulated, if you take that off then thers one more tiny layer covering the glas you have to scrape off to actully see the glass, wich hurts worse than a cactus if it gets in your skin, not fun...wires can be very tiny and can be very large, i have samples of wire as thick as a golf ball, very heavy, you have to use a electric wench system to pull it
An electrical wire is composed of a copper (sometimes steel, aluminum, or other metal) core, surrounded by a plastic cover to insulate it. The newer fiber optics wires for communications contain a translucent plastic core for transmitting light signals.
