'If particles also behave as waves, then what is oscillating?' I'm fairly sure that most people would consider this a nonsensical question. But I'm not sure why and I was hoping someone could clear this up for me. My thoughts are: The wave function is just a mathematical model, so don't panic. Particles behave as waves as well, stuff isn't really either, it could really be something in between but nobody knows, so don't panic. Thanks in advance.