If you don't understand it...

Here is a thing that I do not understand. I think it has something to do with wireless resisters (?) but since I don't know what they are either, that's not very helpful. Inspired by Hazel's last post, I am going to do some drawings. I am not sure if they will help me understand what it is or how it works, but I am looking forward to reconnecting with pencil and paper to see what sort of understandings come from drawing lines...