> But two University scientists were still surprised to find it lurking in a quantum mechanics formula for the energy states of the hydrogen atom.
So, in a round object?
> “What surprised me is that the formula occurred in such a natural way in the calculations, with no circles involved in determining the energy states,” said Hagen, the co-author of the paper.
More likely the connection is to the area under the bell-curve: sqrt(pi). The connection to quantum mechanics is via probability theory.