How do I simulate the double-slit experiment?

Open this page and use the live Photoelectric Effect tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive the double-slit experiment from your own measurements.

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Photoelectric Effect for the double-slit experiment

Simulate the double-slit experiment live in your browser. This runs the real Photoelectric Effect solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

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Photoelectric EffectLive

Einstein's photon

Controls

Presets

Light frequency (10¹⁴ Hz)

Work function φ (eV)

Light ejects electrons from a metal only if each photon carries enough energy — no matter how bright a below-threshold beam is. Einstein explained it with KEmax = hf − φ: energy comes in photon packets of hf, and the work function φ is the escape cost. Below the threshold frequency, nothing happens. This won him the Nobel Prize.

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Data Inspector

Photon energy3.31 eV

Max KE1.01 eV

Stopping voltage1.01 V

Emissionyes

Governing equation

K_{m a x} = h f - φ = 3.31 - 2.3 = 1.01 eV

Reading this result: Each photon carries 3.31 eV, above the 2.3 eV work function, so electrons escape with up to 1.01 eV — a brighter beam adds more electrons, not more energy per electron.

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

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About this simulation

The full Photoelectric Effect tool models the double-slit experiment with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

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Frequently asked questions

How do I simulate the double-slit experiment?: Open this page and use the live Photoelectric Effect tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive the double-slit experiment from your own measurements.