We can improve on the realism of the ideal gas by giving the atoms a small...

 

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We can improve on the realism of the ideal gas by giving the atoms a small radius. If we make the potential energy infinite inside this radius (hard spheres), the potential energy is simple (zero unless the spheres overlap, which is forbidden). A two-dimensional L x L box with hard walls contains a gas of N hard disks of radius r < L. The disks are dilute; the summed area Nar We can improve on the realism of the ideal gas by giving the atoms a small radius. If we make the potential energy infinite inside this radius (hard spheres), the potential energy is simple (zero unless the spheres overlap, which is forbidden). A two-dimensional L x L box with hard walls contains a gas of N hard disks of radius r < L. The disks are dilute; the summed area Nar We can improve on the realism of the ideal gas by giving the atoms a small radius. If we make the potential energy infinite inside this radius (hard spheres), the potential energy is simple (zero unless the spheres overlap, which is forbidden). A two-dimensional L x L box with hard walls contains a gas of N hard disks of radius r < L. The disks are dilute; the summed area Nar