Posted: Sep 14, 2012 11:33 am
by DavidMcC
Jakov wrote:Frogs eyes can see individual photons.

Presumably, you're referring to this, Jakov:
Frog photoreceptor counts photons

Some researchers have claimed the same for human eyes, but that is controversial, because of the background noise in real eyes. I don't know if frogs' rod cells suffer from the same problem when in the context of the frog's eye, rather than this experimental set-up. :dunno: