- #1

Yosty22

- 185

- 4

## Homework Statement

The probability density at certain points for a particle in a box is zero. Does this imply that the particle cannot move across these points? Explain. (I found a picture online http://www.everyscience.com/Chemistry/Physical/Quantum_Mechanics/.images/PBxWvfns1.gif).

## Homework Equations

## The Attempt at a Solution

In a particle in a box, you can graph |ψ|

^{2}is the probability of finding a particle at a certain point in space. If you graph the function, there are nodes where the function is equal to zero. I know that this implies that you will never find the particle at that specific location, and I also understand that the particle can still cross that node. I just cannot figure out a proper, physical way to explain this. I know that the answer is that these zero probability points do

*not*imply that the particle cannot move across the points, but I am having trouble explaining why.

Any help would be great,

Thank you.