Created almost 4 years ago, updated 5 months ago
https://sci.tanta.edu.eg/files/Microwave%20spectroscopy%20BSc-Lect-2.pdf irregular not-equidistant levels
Ammonia - more is different
## Non-rigid rotor https://sci.tanta.edu.eg/files/Microwave%20spectroscopy%20BSc-Lect-2.pdf irregular not-equidistant levels ## Tunneling - https://en.wikipedia.org/wiki/Pyramidal_inversion [Ammonia - more is different](http://www.tcm.phy.cam.ac.uk/~bds10/aqp/anderson72more_is_different.pdf)Copy