So the solution that has water as solvent increases in its concentration of zinc ion and at the same time, it increases the positive charge found within our solution in beaker one in half cell number one. Now, these electrons travel through the conductor and across and into the other side. Now, as it travels from this side to this side, this light bulb lights up. And therefore, this light bulb allows us to visualize the movement of these electrons. As soon as it lights up, we know that electrons are traveling from this side to this side. Now let's look at hop cell number two.