Where to buy electrets and how they work

[jonjacson]

Everyone has magnets, but I was wondering what is their electrical equivalent. OBviously an electron is charged but I can't manipulate it.

I have found this:

https://en.wikipedia.org/wiki/Electret

Do you know this materials? Is it possible to purchase some electrets in a store?

 

[Khashishi]

Electrets are commonly used in condenser microphones.

 

[NascentOxygen]

Try a search on the forum for electret in thread titles, you'll find lots of previous discussion.