Permalloy

Permalloy is a kind of metal that is really good at stopping electric and magnetic energy from passing through it. It's like a wall that blocks these kinds of energy, kind of like how a brick wall can stop you from seeing through it or getting through it.

When we say electric and magnetic energy, we mean things like electricity, radio waves, and magnetic fields. Permalloy is so good at blocking these things that it is often used in things like transformers, which are devices that help move energy from one place to another.

So imagine permalloy is like a really strong and sturdy wall that protects energy from going through it. It's like the superhero of metals when it comes to blocking electric and magnetic energy!