All I know about the Double Slit Experiment is that some particles are shot at a pair of slits, and the particle apparently splits, goes through both slits, and interferes with itself, creating an interference pattern, but if the particles are observed, they collapse and give the results you'd expect from particles. However, I need details. 1. What particles are used in the experiment? I've heard conflicting stories. Some people say electrons, others say we don't have the tech to use electrons, so we use neutrons. Which is it? 2. How are the particles observed? If the answer to this is what I'm thinking, I'll have another question.