1. The problem statement, all variables and given/known data We're learning some basic quantum mechanics by studying the stern-gerlach experiment so some of my terminology might be a bit off as it might be particular to this book, I'm not sure. Say we have +z atoms (magnetic moment in +z direction?) shot through a +x selector followed by a -z selector. I need to find the probability that the atoms pass through. Should I get probabilities 1/2 * 0 = 0. So 0 percent make it out? What happened to that latex guide on here btw? I don't know how to make bras or kets or up/down arrows.