Radiocarbon (C-14) Age with Calibration Note 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

t5-027

Effect

Computation or source lookup only

Input and validation requirements

The raw formula has an undefined input at f=0 and produces a mathematically finite but physically invalid negative age for f>1. A robust instrument must reject those inputs. The pMC-versus-ratio convention is also hazardous unless the representation is explicitly declared.

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": {
    "input_mode": "pMC",
    "value": 100
  },
  "expected_outputs": {
    "fraction_modern": 1,
    "conventional_age_BP_years": 0
  },
  "working": "Convert pMC to fraction: f = 100/100 = 1. Compute 1/f = 1/1 = 1. ln(1) = 0. Therefore t = 8033 × 0 = 0 years BP."
}

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-tranche5/tranche5-results.json