Photoelectric Effect Calculator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t6-118

Effect

Computation or source lookup only

Input and validation requirements

A zero incident wavelength creates the undefined operation f = c/lambda. The instrument should reject this input; returning infinity, a numeric photon energy, or an ejection result would be a failure.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "material": "Na",
    "work_function": "φ=2.28 eV",
    "incident_wavelength": "λ=400 nm"
  },
  "expected_outputs": {
    "photon_energy": "4.9661146425×10^-19 J = 3.0996049608 eV",
    "threshold_frequency": "f0=5.5130154718×10^14 Hz",
    "threshold_wavelength": "λ0=543.790344 nm",
    "ejection": "yes",
    "KE_max": "1.31315191698×10^-19 J = 0.8196049608 eV",
    "stopping_voltage": "0.8196049608 V"
  },
  "working": "1. Convert wavelength: λ=400 nm=4.00×10^-7 m. 2. Photon energy: E=hc/λ=(6.62607015×10^-34)(299792458)/(4.00×10^-7)=4.9661146425×10^-19 J. 3. Convert photon energy: E/e=(4.9661146425×10^-19)/(1.602176634×10^-19)=3.0996049608 eV. 4. Excess energy: KE=3.0996049608−2.28=0.8196049608 eV. 5. Convert KE to joules: 0.8196049608(1.602176634×10^-19)=1.31315191698×10^-19 J. 6. Stopping voltage: V=KE/e=0.8196049608 V. 7. Threshold frequency: f0=φ/h=(2.28 eV)(1.602176634×10^-19 J/eV)/(6.62607015×10^-34 J·s)=5.5130154718×10^14 Hz. 8. Threshold wavelength: λ0=c/f0=543.790344 nm. Since 400 nm<543.790344 nm, emission occurs."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche6/tranche6-results.json