More silly questions. If a photon is absorbed, does its wave disappear? Say one photon was created in a vacuum in an area of space that was completely devoid of energy. The wave from that photon could propagate for light years without encountering anything. Say you had an array of detectors that provided complete coverage of half of the sphere of 1 light year radius from the source of the wave. Would those detectors have a 50% likelihood of seeing the photon, and then would the other half of the wave disappear if they did?