3 ms·
When you fire a photon on a wall and see a blip, the blip is the location of the atom that had the electron that absorbed the photons energy (The electron that
by hasenj 10y ago
When you fire a photon on a wall and see a blip, the blip is the location of the atom that had the electron that absorbed the photons energy (The electron that interacted with the photon).
Presumably there are gazillion photons. Presumably they all want that photons energy. Presumably the photon is stretched out in space so it sort of "touches" all of them. Yet, only that one electron got lucky.