What is "actinology"

Actinology \Ac`ti*nol"o*gy\, n. [Gr. ?, ?, ray + -logy.] The science which treats of rays of light, especially of the actinic or chemical rays.

n. (context science English) The study of the effect of light on chemicals.

Actinology is the study of the chemical effects of High-energy visible light and ultraviolet light. Actinology is derived from Greek aktino, meaning a radiant force, and the English suffix logy, meaning the study of.