| When the fencer is correctly earthed, all insulators and connections are correct and there is no vegetation growth on the wire. |
| They lie in a grey area between conductors and insulators whose boundaries are somewhat unclear, and it is this ambiguity itself that is useful. |
| Liam had climbed 30 ft up the pylon and came into contact with high voltage insulators. |
| Hendrik Schon claimed to have found a way of injecting electric charge into organic crystals, enabling him to turn insulators into conductors. |
| Unlike low-temperature superconductors, which are metals, high-temperature superconductors are insulators in their normal state. |
| We used these concepts to define conductors, insulators, and semiconductors, and showed one means of altering the conductivity of semiconductors. |
