http://www.physlab-wiki.com/ 2026-05-17T22:29:37+00:00 http://www.physlab-wiki.com/ http://www.physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2021-11-05T18:08:31+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/physicsdemos/thermodynamics_and_fluid_dynamics/statistical_mechanics/gaussian_distribution_machine?rev=1636150111&do=diff Gaussian Distribution Machine ---------- A large number of balls is allowed to fall down through an array of pegs and into a series of bins. The heights of balls collected in the bins roughly show the shape of a Gaussian distribution. M3 PIRA DCS 1A20.10 text/html 2021-11-05T18:05:44+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/physicsdemos/thermodynamics_and_fluid_dynamics/statistical_mechanics/irreversible_mixing_marbles?rev=1636149944&do=diff Irreversible Mixing Marbles Two groups of marbles of different color are separated by a partition in a tray. When the partition is removed and the tray is shaken, the marbles become irreversibly mixed. P1 PIRA DCS 4F10.20 text/html 2021-11-05T18:06:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/physicsdemos/thermodynamics_and_fluid_dynamics/statistical_mechanics/kinetic_theory_apparatus?rev=1636149972&do=diff Kinetic Theory Apparatus Plastic balls are enclosed in a cylindrical chamber by a freely moving counter balanced piston. A variable motor driven impeller at the base of the cylindrical chamber is used to excite the balls, thus exerting pressure on the piston. The apparatus has a built in high frequency induction coil used to eliminate electrostatic charges through the ionization of the enclosed air. text/html 2021-11-05T18:06:48+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/physicsdemos/thermodynamics_and_fluid_dynamics/statistical_mechanics/kinetic_theory_projection_apparatus?rev=1636150008&do=diff Kinetic Theory Projection Apparatus A number of ball bearings enclosed in a transparent box are driven in two dimensions by a variable-speed mechanical agitator. An overhead projector is used to project shadow images of the balls in motion providing a qualitative sense of the distribution of velocities.