Main Question or Discussion Point
First off, is a photon just one wave cycle of an EM sine wave (2∏). If so, could the human eye detect just a single photon by itself?
No. In fact, there hardly is a notion of a "single photon".First off, is a photon just one wave cycle of an EM sine wave (2∏).
That depends on the energy of the photon, which can range from zero to somewhere about infinity.If so, could the human eye detect just a single photon by itself?
Actually, you are on the right track... the doubt about whether something was seen is part of the measurement. In all kinds of discrimination tests like this, the threshold is defined as just when the observer is correct only half the time.I would think that with 6 photons, and under those ideal conditions, you would still be wondering to yourself "did I see something there"? lol.
Though, I'm not very familiar with human physiology to be of more help.
I'm not even sure how this is on-topic in this thread!There is a related phenomenon with cosmic rays. Apparently single sub-atomic particles can be perceived, although the mechanism is not clear.
I'm not sure how this translates to single high-energy photons.
This is a very popular view of what a photon must be. Unfortunately it just doesn't make sense. One 'clincher' argument is that a single photon of a Long Wave Radio signal would occupy more than 1km of space and yet it represents less than a millionth millionth of the energy of a single photon of visible light. Don't go looking for a 'size' for a photon in conventional terms.First off, is a photon just one wave cycle of an EM sine wave (2∏). If so, could the human eye detect just a single photon by itself?