Wiktionary
photochemically
adv. By means of, or in terms of, photochemistry.
Usage examples of "photochemically".
Lombard found nonetheless that he could manage very well with the goggles, which were of self-varying glass, responding photochemically to the ambient light-level.
Hydrogen peroxide was produced photochemically as a result of exposing water and oxygen to light after the chemists had added a small amount of zinc oxide and a trace of organic matter.