PPolySim OS
For Engineers · Particle in a Box

Particle in a Box for a particle in a box

Built for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed. Simulate a particle in a box live below — adjust the inputs and watch it respond, right in your browser.

Particle in a BoxLive

Controls

Presets

Confine a quantum particle to a box and its energy can only take discrete values, E_n = n²h²/8mL². The wavefunctions are standing waves with n humps; squaring them gives the probability of finding the particle at each point. Narrowing the box pushes the energy levels dramatically higher — quantum confinement.

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Data Inspector

Energy Eₙ3.384 eV
Level n3
Nodes2

Governing equation

Reading this result: Level n=3 carries 2 interior nodes, and because energy scales as n² it sits 9× above the ground state of this same well.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Frequently asked questions

Is this good for engineers?
Yes — this version of "Particle in a Box for a particle in a box" is framed for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.