Are you good at taking aim? For this special cannon you don’t need a bullet, it shoots metal rings with the help of whirling current.
How to use?
Place the metal ring to the barrel of the cannon and press the button that serves as the trigger. The ring will fly to the dartboard. Try to hit the hole in the middle! You have to collect five hits, the display will show how long it took for you.
With the button you switch electricity to the coiled wire on the bottom of the metal barrel. Due to the electricity a magnetic filed will be generated, then whirling currents are produced in the metal ring. In the sense of the Lenz principles, these whirling currents produce such a magnetic filed that counteracts to the magnetic filed that created it. This is how the power comes alive that makes the ring fly.