If I walk 5 miles away and I hold either of these balls, you won't see any ball and you won't be able to tell where the ball is and with what speed or with what velocity it's moving. The point is, and what this uncertainty principles show, is that as you shrink down to the atom and then to the sub atom, to the electron, you no longer are dealing with solid spheres. They're no longer solid spheres, and they act more as waves. In other words, they have both wavelike properties and solid properties. And that means, because elementary particles are no longer solid spheres, there is no way to know its position and at the same time, its velocity with complete certainty. So the formula or the equation for this uncertainty principle is the following plaques constant a very, very small number divided by two is always less than our change in x or the uncertainty of our position.