Wien's displacement law API

Computes the blackbody peak emission wavelength λ_peak = b/T and peak frequency from temperature, and classifies the spectral region (UV/visible/IR…). Answers 'At what wavelength does a hot body emit most strongly?', 'What colour is a 5778 K blackbody?'.

Price$0.04per request

MethodPOST

Route/v1/engineering/wien-peak

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

waveswienblackbodydisplacement-lawpeak-wavelengthtemperaturespectrumphysics

API URLhttps://x402.hexl.dev/v1/engineering/wien-peak

Integration docs

Example request

{
  "temperatureK": 5778
}

Example response

{
  "peakWavelengthNm": 501.5182,
  "peakWavelengthM": 5.015181645898235e-7,
  "peakFrequencyHz": 339684330239460,
  "temperatureK": 5778,
  "spectralRegion": "visible",
  "interpretation": "Peak emission at 501.5 nm (visible) for a 5778 K blackbody."
}

Input schema

{
  "type": "object",
  "required": [
    "temperatureK"
  ],
  "properties": {
    "temperatureK": {
      "type": "number",
      "description": "Blackbody temperature (K)",
      "examples": [
        5778
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}