Animation
In photosystem II, the water-splitting center cycles through four stable states
![Photosystem II baseball](/sites/default/files/2023-05/psII_baseball_v03.gif)
Illustration
When light drives electron transfer in a molecular complex, the surrounding solvent molecules also rapidly move.
![When light drives electron transfer in a molecular complex, the surrounding solvent molecules also rapidly move.](/sites/default/files/styles/card/public/2022-10/electron_transfer_atomic_motions_artwork_final_1200x768.jpg?h=5baddcf8&itok=2DKOq0wV)