Expensive copper wire was only used for trees that had real potential.

The only difference between copper wire and air is that the former carries the current.

They took away the copper wire from his wrists next.

This means that the copper wire now has a higher resistance.

Isn't it amazing what can be done with a few yards of copper wire?

Moving phone conversations around on little tiny copper wires, one at a time.

Or you would have to use over 50 meters of copper wire, which is more expensive and difficult to build.

As for the copper wires, they are next to immortal.

Is a fiber really that much more difficult/expensive to run than a copper wire?

However, nobody in any company ever got fired for buying copper wire.