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I have a question about zero point of probability density of particle. In general we say if probability density is zero at a certain position, the particle never arrive there. But I also read some post in this forum. They said zero probability density means you have zero chance of seeing the particle. It doesn't mean the particle never arrive there. Only because of wave function interference, we have zero chance to see them. For example, oscillator excited state, there are several nodes in the wave function. In real world, it still pass through the zero probability density position. Where I use inaccurate word, there is no accurate position measurement. Another example is double slit experiment. We see alternate bright band and dark band in the screen. Dark band means that we cannot see the photon reach those places but photon really visit there. Because of interference of wave function, we have no chance to see them. Is my understanding right? if wrong, where does I make a mistake? thanks

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# Meaning of zero probability density

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