Posted: Mar 31, 2019 8:11 am
by newolder
DougC wrote:Would it be possible to capture individual photons?

I'm not sure I know what this means - but I'll have a go... A pulse of laser light is, by definition, an amplification by stimulated emission of photons in a chamber. The laser pulse of (very many photons) then travels along, say, an x-axis whilst in order to be observed, some of the photons in that pulse must be scattered out of the x-y plane (by a milky solution in this case) and into the detector (or observer's eye). As far as I'm aware (but I could be wrong), human eyes cannot detect individual blue photons and any detector that does detect a single photon would have to amplify that signal in order to be observed by a human.