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And this last one here, and I'll give Tom a call. Tom will give the show in about a minute here. So the study just came out in the general physical reviews. This is August 20th. So very recently I was describing how scientists used ultrafast x-ray flashes to take an image of a single electron moving in a chemical reaction. In this case, it was an availing electron. So an availing electron is an electron at the outermost shell of an atom. That's the one that gets shared between other elements. And so they were able to see this electron as it moved during the break up of an ammonia molecule. So x-rays have a perfect wavelength for seeing details of things at atomic scale. With x-rays, their wavelength is somewhere around 10 nanometers to about 10 picometers, somewhere on the right wavelength. And these x-rays cause this strong interaction when used on core electrons. The valence electrons and those responsible for the chemical reaction, they remain hidden until now. Just rock on.