Source: https://guthlabs.ai/docs/instruments/stefan-boltzmann-radiated-power-calculator/implementation/

instrument implementation / implementation-contract

# Stefan-Boltzmann Radiated Power Calculator implementation

A source-bound implementation contract for Stefan-Boltzmann Radiated Power Calculator; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## 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**: t5-231

**Effect**: Computation or source lookup only

## Input and validation requirements

The intensity calculation is undefined for zero area because it evaluates 0/0, so the instrument must reject A=0 for intensity. The specification also leaves temperature-unit conventions implicit, allowing a severe Celsius-versus-kelvin misinterpretation.

## 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": {
    "area_m2": 2,
    "temperature_K": 300,
    "emissivity": 1
  },
  "expected_outputs": {
    "power_W": 918.600655878,
    "intensity_W_per_m2": 459.300327939
  },
  "working": "T⁴=300⁴=8,100,000,000 K⁴. Intensity=εσT⁴=1×(5.670374419×10^-8)×8,100,000,000=459.300327939 W/m². Power=Intensity×A=459.300327939×2=918.600655878 W."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/stefan-boltzmann-radiated-power-calculator/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/stefan-boltzmann-radiated-power-calculator/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/stefan-boltzmann-radiated-power-calculator/qualification/>)

## 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`