The Nonlinear Schrodinger Equation in Optics

We're probably never going to be able to make these really vibrating a heavy paddle really, really quickly at a range of frequencies. That's always difficult. So I think it's basically a cautionary tale about some of the experiments. And there are a lot of things being designed based on wave tank experiments where previously we thought about the tail as indeed a technical assumption. We set the limit at two hertz and it's not important. It is in fact far more important than we even thought. And we should be very, very careful about it.