Ared light bulb is rated for 10 w and emits light of wavelengt 50 nm. how many photons per second does this light bulb emit? the eye carn e a light source if more than 100 photons from the source per second enter e eye pupil of diameter 0.25 cm. how far from the light bulb can the light bul e "seen" by the human eye assuming the light bulb is a point source of light nd that it is the only light that can be seen (in other words, in deep space)?