The Whirling Sphere

There is a walnut suspended. You're looking at it right now. You might ask yourself how and what secret lies behind it, or whether it truly exists or not. I must tell you that it does, and you bear witness to it. I suggest that, for a moment, you merely observe and not try to figure out how it came to be. You are now witnessing a phenomenon, right in front of your eyes, just like you’ve viewed everything else you have ever seen, with the mere fact that you see explaining their existence. You are currently watching a suspended walnut, just as you would anything else. Now let me put your mind at ease and refer back to the first question. Why and how? I must tell you that, in this world, there are also things that exist but cannot be seen, and what keeps the walnut suspended fits in the category of things invisible. There is no magic involved; the invisible merely bring the visible into movement.