Hi everyone. As you may know, it is possible to create a torus or toroidal vortex of air. Some toys such as the air zooka create a torus of air that travels across a room to knock down a light object. Do you think it is possible to create a device that produces a continuous torus of air? Obviously you would need a continous flow of air would could be produced by a fan. That way the air torus is sustained and keeps going. Then when you have this air torus going , do you think it would be possible to float an object on top of the torus? Like a hoverboard? The bottom of the air torus would push against the ground, and the top would support the bottom of the board. So the air torus would stay in the same place. It may not work. Because the torus would not have sufficient strength to hold up the board. But then an air torus or smoke ring seems to have a self sufficiency that keeps its geometry in place, at least for a short time. You could have a hoverboard with two air torus generators blowing the air torus or torii down on to the ground, supporting the board. The air torus generators would consist of a fan blowing air throught a nozzle or simply a hole. There may be more effective ways of generating an air torus. I would be interested to hear what you think of this idea.