Now, the outside of electric wires are usually covered in plastic because it’s a very poor conductor. It hardly conducts any electricity at all, so we can say it’s an electrical insulator.

On the periodic table, semiconductors (also known as metalloids) crop up along a diagonal line between conductors and insulators. Noble gases such as helium and neon are poor conductors of ...

Quantum theory restricts certain physical quantities to specific values, influencing material behavior, particularly in ...