https://gdpark.blog/tags/stationary-states/Recent content in Stationary States on gdpark.blogHugoenThu, 24 Dec 2015 00:00:00 +0000https://gdpark.blog/posts/quantum-mechanics-28-the-feynman-hellmann-theorem/Thu, 24 Dec 2015 00:00:00 +0000https://gdpark.blog/posts/quantum-mechanics-28-the-feynman-hellmann-theorem/Working through three practice problems on commutators and the virial theorem to nail down the Feynman-Hellmann theorem before diving into hydrogen’s fine structure.