How Do You Define Conductivity?

Oganso: A material is sort of like a grade of atoms. And we want to think about how electrons can move through that grade, right? So an individual atom has its electrons, and the next one has its electrons. One makes something not conduct o, an insulator. Oganso: Instead of an empty hose that you're passing one electron all the way through, think of it like a hose. It's already filled with electrons. You're pushing one in, and then another electron pops out the other side.