So this guy must be the inside. So now let's see what happens. Well, electrons leave this potassium ion or leave the potassium solid ion this electrode and travel via the conductor, via the cell membrane onto this electrode. At the same time, they release these potassium ions into our solution. So the concentration of this guy on the outside becomes greater. Likewise, these guys on the inside here are taken up because they react with the electrons to form our K solid.