Finally, the coil was wound on a light-former made of conductive metal, which acted as a damper.

As important, it is made of highly conductive metals, not the semiconductors of modern electronics.

Just outside of the rubber/plastic covering is a conductive metal that intercepts any noise signal.

Because the conductive metal is grounded, the noise signal runs straight to ground before ever getting to the true wire.

The electromagnetic field would be formed using the conductive metal of the car body.

I think the millions of volts never really show up along the length of the rod, because it is a conductive metal.

Metals can be coated with paint or other less conductive metals (passivation).

Higher-pitch sounds signaled the presence of more conductive metals like bronze, brass, copper and silver.

The motion of electrons in conductive metals in a specific direction is known as electric current.

They're just a combination of conductive metals and a chemical coating sensitive to changes in the transmitter.