Please!! Clarification Needed! As I understand the wave particle duality of quantum mechanics, quanta exhibit both wave and particle properties. They: (i) exhibit wave properties before being measured, i.e. the position of a single quantum object is spread out over space, and the wave amplitude of this object gives the probability of being found in a specific position. This lack of definite position before being measured (can just be calculated in terms of probability) means the quantum object exhibits wave properties. (ii) exhibit particle properties once the measurement act has taken place, i.e. the position of a single quantum object is then localised, and the precision in its position reduces the ability to predict other quantities (the Uncertainty Principle). The initial problem I had with the wave particle duality is that when I thought of quantum objects as being waves (in the traditional meaning of the word which I had learned at school, that is, a wave is a disturbance that transfers energy without transferring matter) I thought of it as not being a physical entity, i.e. it is not a tangible thing. Of course, this is not a problem with the particle part of the duality, because particles are actually tangible things. However, as I now see it is that quantum objects are neither waves nor particles in the traditional sense of each word, but that they exhibit behaviours of both types but that they are still something physical, that is, something tangible (and not something such as a wave, which cannot really be described as a "thing", excuse the unscientific term). Could anybody clarify if this is the correct interpretation? Am I right? Thanks anybody who takes some time in helping explain this concept.