luminance

{
  "id": "NISTq56",
  "unitsml_id": "q:luminance",
  "name": "luminance",
  "names": [
    {
      "value": "luminance",
      "lang": "en"
    },
    {
      "value": "luminance lumineuse",
      "lang": "fr"
    }
  ],
  "short": "luminance",
  "type": "derived",
  "dimension": {
    "id": "NISTd27",
    "name": "illuminance",
    "expression": "L-2·J",
    "components": [
      {
        "key": "length",
        "symbol": "L",
        "power": -2
      },
      {
        "key": "luminous_intensity",
        "symbol": "J",
        "power": 1
      }
    ],
    "dimensionless": false
  },
  "units": [
    {
      "id": "NISTu124",
      "name": "stilb",
      "symbol": "sb"
    },
    {
      "id": "NISTu222",
      "name": "lambert",
      "symbol": "L"
    },
    {
      "id": "NISTu277",
      "name": "footlambert",
      "symbol": "ft.L"
    },
    {
      "id": "NISTu7.u1e-2/1",
      "name": "candela per square meter",
      "symbol": "cd·m⁻²"
    }
  ],
  "unit_count": 4,
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTq56"
    },
    {
      "type": "unitsml",
      "id": "q:luminance"
    }
  ],
  "references": [
    {
      "type": "normative",
      "authority": "si-digital-framework",
      "uri": "http://si-digital-framework.org/quantities/LUMA"
    },
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/quantitykind/Luminance"
    }
  ]
}