Hi everyone, I have a few queries about neutrinos. I have recently read that there are 3 generations of neutrinos, namely the electron neutrino, the muon neutrino and the tau neutrino. Q1: Why are they all massive particles and is it true that it is more favourable to go from muon neutrino to electron neutrino and why is that? Is it something to do with stability or decay? Any experimental evidence? Q2: As for experimental evidence, do we need to have a lot of energy/power to detect these massive weakly interacting particles? Why is it that they only undergo weak interactions? Q3: Follow up from Q1, is it possible if we can make the decay from electron neutrino to muon neutrino just as favourable as the process from muon neutrino to electron neutrino? If yes, how do we achieve that? Thanks guys!