What is Actinic Light (or Intensity, or Radiation)

Actinic Light (or Intensity, or Radiation) - refers to the light used to complete the photochemical reaction in the most effective wavelength range of light. For example, light in the wavelength range of 360 ~ 420nm, azo brown Film, general black and white film and dichromate photosensitive film, the fastest and most complete response and the greatest effect, that is, effective light.