Velocity distribution of atoms

AI Thread Summary
The discussion centers on the behavior of gas atoms in a 3D box and their velocity distribution as described by the Maxwell distribution. When a hole is made in the box, the question arises whether the velocity components remain governed by the Maxwell distribution. It is suggested that the distribution still applies, but confusion exists regarding the representation of negative velocities in the context of the coordinate system. The challenge lies in understanding how to account for negative velocities when plotting the distribution. Ultimately, the conversation highlights the complexities of applying the Maxwell distribution to a scenario where atoms can escape from confinement.
Niles
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Homework Statement


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?


Niles.
 

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I would say that it is still given by a Maxwell distribution, but something about this I can't quite understand: When I plot the distribution, the probability of having a negative velocity is zero. So after choosing a coordinate system, how would I ever be able to get a negative velocity?Niles.
 

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