Professor Tom Chasteen developed these animated and interactive learning resources. Firstly, they teach analytical chemistry concepts. Secondly, they are very visual. Thirdly, they are interactive. They do require some patience and commitment, because they are helping students to learn about advanced topics like chromatography, spectroscopy, electrophoresis, chemiluminescence, and miscellaneous.
Here are the links to Professor Chasteen’s spectroscopy animations: Jablonski diagram, Photomultiplier Tube, Photoelectric Effect, Light Grating, Double Beam Ultraviolet/Visible, X-Ray Absorption Spectroscopy, ICP Spectrometry with CCD detection, ICP Spectrometry with Roland Circle and PMTS, Hydride Generation AAS, Atomic Absorption Spectrometry.
Here is a link is for Professor Chasteen’s Chemiluminescence Page: Chemiluminescence.
Professor Chasteen’s full list of interactive animations: Chemistry-Based Animations.