Seven fundamental physical constants (NIST/UK/France paper)

She said in her talk that they were going to replace it with Planck's constant. I was sitting there thinking, and I said, so how are they going to do that? Are they going to take E = hν, and E = mc², and combine them? You'll get the speed of light, right? And so if you want to get mass, then mc² = hν, and you can measure ν very well because it's time-based, it's one over time, and we can measure time more accurately than anything else. She says to me, oh, it's not that simple, I'll give you a paper. This is the paper she gave me. It turns out, at my level, it is that simple. At her level it's a lot more complex. But in fact this paper shows you that there are seven fundamental physical constants that we need to try to measure.