1. The problem statement, all variables and given/known data Hi If I have a gas of atoms confined to a (3D) box, then the probability of an atom having a speed (vx, vy, vz) is given by the Maxwell distribution. Say I now make a hole in the box, such that the atoms can "fly" out of it (see attached picture). Would I still be able to describe the components by a Maxwell distribution? Best, Niles.