No! My, you persistently evade the point. Perception of light requires about 100 quanta. Rods have been activated by single quanta.
The rods and cones of the human eye.
Rod DetailsThe rods are more numerous of the photoreceptors, some 120 million, and are the more sensitive than the cones. However, they are not sensitive to color. They are responsible for our dark-adapted, or scotopic, vision. The rods are incredibly efficient photoreceptors. More than one thousand times as sensitive as the cones, they can reportedly be triggered by individual photons under optimal conditions. The optimum dark-adapted vision is obtained only after a considerable period of darkness, say 30 minutes or longer, because the rod adaption process is much slower than that of the cones. |
Everyone seems to have an opinion today about who's evading points. If I gave you a mechanical counter, could you click it each time you were made consciously aware of a photon stimulating one of your rods? Are you contending that stimulus you are not able to consciously discern is in some manner less of an inductive stretch than hooking up an oscilloscope? (or digging up a bone?)