Kolik fotonu na bunku

[Jan Waclawek]

http://en.wikipedia.org/wiki/Quantum_efficiency

Photographic film typically has a QE of much less than 10%,[2] while CCDs
can have a QE of well over 90% at some wavelengths.

.. ale tych zdrojov sumu je tolko - najma u velkoplosnych maticovych
snimacov, to je samy kompromis -  ze by som to na "jednoelektronovu"
citlivost vobec nezvaloval.

Mimochodom, http://math.ucr.edu/home/baez/physics/Quantum/see_a_photon.html

wek