I'm showing this one first because it's my favorite. The circuits are set up in a circular direction and it makes the power go through the motor really fast because it goes at light speed. When you turn the slide switch on, it goes slow for a little bit, and then it goes fast. Then, when you turn the slide switch back to the off position, the fan has lots of force. It doesn't stop immediately because of a force called inertia. Once you turn it off, it flies up in the air.
