Actinic Radiation -

: While primarily associated with the UV range (especially 200–315 nm), it can also include certain wavelengths of visible and infrared light.

is electromagnetic radiation—typically in the ultraviolet (UV) and short-wavelength visible light spectrum—that is capable of inducing photochemical reactions or biological changes. Key Characteristics actinic radiation

: Unlike standard irradiance (which measures radiation on a flat surface), actinic flux is measured as the total radiation received at a point from all directions ( : While primarily associated with the UV range