So I've been thinking about the slit experiment again... I did some googling/searching for literature but was unsuccessfull for finding the following variations on this subject. What happens when the slits are very long? (very thick sheet) What is the material (Z) dependence? What is the slit shape dependence? What is the temperature dependence (0K vs high K before melting)? What would happen if the sheet was composed of a material with absolutely no charge? (take neutrons for starters then worry about quark charges later) After viewing Tonomura's video (hitachi) it seems to me that photons/electrons are really particles. They just exhibit wavelike phenomena. Similar to a water molecule in a pond. The individual molecule isnt a wave. The forces that dictate its motion create the wave.