For K-12 Students · Photoelectric Effect
Photoelectric Effect for a Josephson junction
Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate a Josephson junction live below — adjust the inputs and watch it respond, right in your browser.
Photoelectric EffectLive
Einstein's photon
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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.
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More with Photoelectric Effect
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Frequently asked questions
- Is this good for k-12 students?
- Yes — this version of "Photoelectric Effect for a Josephson junction" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.