candela per square meter

{
  "id": "NISTu7.u1e-2/1",
  "unitsml_id": "u:candela_per_square_meter",
  "name": "candela per square meter",
  "names": [
    {
      "value": "candela per square meter",
      "lang": "en"
    }
  ],
  "symbols": {
    "unicode": "cd·m⁻²",
    "ascii": "cd*m^-2",
    "html": "cd/m<sup>2</sup>",
    "latex": "\\ensuremath{\\mathrm{cd/m^2}}",
    "id": "cd*m^-2",
    "mathml": "<mrow><mi mathvariant='normal'>cd</mi><mo>/</mo><msup><mrow><mi mathvariant='normal'>m</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow>"
  },
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTu7.u1e-2/1"
    },
    {
      "type": "unitsml",
      "id": "u:candela_per_square_meter"
    }
  ],
  "references": [],
  "short": "candela_per_square_meter",
  "root": false,
  "composite": true,
  "quantities": [
    {
      "id": "NISTq56",
      "name": "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
  },
  "scale": {
    "id": "continuous_ratio",
    "name": "continuous ratio scale"
  },
  "systems": [
    {
      "id": "SI_derived_non-special",
      "name": "SI-derived units non-special",
      "short": "si-derived-nonspecial",
      "acceptable": true
    },
    {
      "id": "SI_compatible",
      "name": "Units compatible with SI",
      "short": "si-compatible",
      "acceptable": true
    }
  ],
  "root_units": [
    {
      "power": 1,
      "unit": {
        "id": "NISTu7",
        "name": "candela",
        "symbol": "cd"
      },
      "prefix": null
    },
    {
      "power": -2,
      "unit": {
        "id": "NISTu1",
        "name": "metre",
        "symbol": "m"
      },
      "prefix": null
    }
  ]
}