colorSpec

type

radiometric quantity

example radiometric unit

actinometric quantity

example actinometric unit

light

energy

joule

photons

µmoles of photons

responsivity
.light

energy->electrical

coulomb/joule

photons->electrical

electrons/photon
(quantum efficiency)

energy->neural

talbot/joule

photons->neural

talbot/(µmoles of photons)

energy->action

(µmoles of O2)/joule

photons->action

(molecules of O2)/photon

Table 2.2 radiometric and actinometric correspondences