effective irradiance with the spectral irradiance,
Note 1 to entry: This definition is based on the assumption that an action spectrum is adopted for the actinic effect considered, and that its maximum value is 1.
Note 2 to entry: It is essential to specify which action spectrum is used, as the unit is the same for any action spectrum.
Note 3 to entry: The erythemal irradiance is expressed in watt per square metre (W⋅m−2).
Note 4 to entry: This entry was numbered 17-403 in CIE S 017:2011.