I'm thinking about the wave/particle duality and I have a few questions about it. Question: How do we know a particle is also a wave if we can't measure it as one? Answer: The double slit experiment, for example, allows us to INFERE the wave nature of particles because of the way multiple particles display an interference pattern on the screen. This interference pattern developes even if we shoot only one particle at a time. Question: If each particle is being fired only one...at...a...time... then, after each particle hits the screen, it is no longer in the chamber, right? So, how does the NEXT particle interfere with the previous ones, if the previous ones are no longer there to interfere with??