hajavalo
Hajavalo is a Finnish term that translates roughly to diffuse or scattered light. In Finnish-language discussions of optics and lighting, hajavalo refers to illumination that has been spread or diffused so that it lacks a single, strong directional component. The term emphasizes the soft, even quality of the light, contrasting with directional or specular illumination.
In physical terms, hajavalo corresponds to diffuse illumination: light that has undergone multiple scattering events at
Usage and scope vary by language. In Finnish texts, hajavalo is used to describe everyday lighting conditions
See also: diffuse reflection, scattering, diffuse luminance.