The Role of Mark in the History of Nuclear Science

There were many, many paths to get to where we are here. It wasn't just just linear but Mark played a critical role and sort of connecting up some early ideas from the original. And so what I did for our research at the AA double a couple years ago or three years ago was, I started looking at these old databases of what was the band gap the actual photon emission line of these different materials. We found that those two overlapped quite closely and close enough that when you combine that one material which I think they were aware of with this other photo will take that they hadn't really thought of. So there was a mix and match and once we did that we saw an efficiency