Usage examples (16)

• - Adaptation of the physical receiver to the photopic eye response curve.
• Their spectral sensitiveness is various and not congruent with the photopic eye response curve.
• Even the one octave of visible light is not featureless, at least not to normal individuals and not in photopic vision.
• The graphic representation of this ratio shows the spectral photopic eye response curve for daylight and night vision (Fig. 1).