IUPAC definition : A plot of a relative biological or chemical photoresponse ( Δ y) per number of incident
photons against wavelength or energy of radiation under the same radiant power of
light. This form of presentation is frequently used in the studies of biological or
solid state systems, where the nature of the absorbing species is unknown. This type
of action spectrum is sometimes called spectral responsivity or sensitivity spectrum.
The precise action spectrum is a plot of the spectral or quantum effectiveness. By
contrast, a plot of the biological or chemical change or response per absorbed photon
(quantum efficiency) versus wavelength is the efficiency spectrum.;
A plot of a relative biological or chemical photoresponse ( Δ y) per number of incident
photons against wavelength or energy of radiation under the same radiant power of
light. This form of presentation is frequently used in the studies of biological or
solid state systems, where the nature of the absorbing species is unknown. This type
of action spectrum is sometimes called spectral responsivity or sensitivity spectrum.
The precise action spectrum is a plot of the spectral or quantum effectiveness. By
contrast, a plot of the biological or chemical change or response per absorbed photon
(quantum efficiency) versus wavelength is the efficiency spectrum.
Currated CISMeF NLP mapping