For Engineers · Photoelectric Effect
Photoelectric Effect for a spin measurement
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 spin measurement live below — adjust the inputs and watch it respond, right in your browser.
Photoelectric EffectLive
Einstein's photon
Controls
Presets
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.
Data Inspector
Photon energy3.31 eV
Max KE1.01 eV
Stopping voltage1.01 V
Emissionyes
Governing equation
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.
Also for:StudentsResearchersEducatorsHobbyists & MakersK-12 StudentsFirst RespondersGeneral version →
More with Photoelectric Effect
Photoelectric Effect for a hydrogen atomPhotoelectric Effect for a quantum wellPhotoelectric Effect for a qubitPhotoelectric Effect for the double-slit experimentPhotoelectric Effect for a particle in a boxPhotoelectric Effect for a tunneling electronPhotoelectric Effect for a laser cavityPhotoelectric Effect for a Bloch sphere
Frequently asked questions
- Is this good for engineers?
- Yes — this version of "Photoelectric Effect for a spin measurement" 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.