Gas Kinetic Theory Simulator (2D)

Gas State

Temperature 300 K

Particle count 160

Container volume 100%

Actions

Gas at equilibrium — watch the walls for pressure.

Live Readout

Avg speed

Pressure P

Avg KE

PV / nRT

How it works

Every particle in this box is a point of gas moving in a straight line until it hits a wall or another particle, exactly like the kinetic theory of gases models a real gas. Temperature is nothing more than the average kinetic energy of these particles: raising T makes every particle move faster, so the average kinetic energy scales with T (here KE ≈ kT, using a scaled Boltzmann constant k = 1 for a 2D gas).

Pressure comes from particles slamming into the container walls — count how many collisions happen per second and how hard, and you get the force per unit wall length. Squeeze the volume down while holding temperature and particle count fixed and the same number of particles hit the walls far more often, so pressure rises — the direct visual proof of the ideal gas law, PV = nRT.

The PV / nRT readout should stay close to a constant for this simulated gas: push temperature up, or volume down, or add particles, and pressure moves to compensate, keeping that ratio steady — just as it does for a real ideal gas.