meter to the power four

{
  "id": "NISTu185",
  "unitsml_id": "u:meter_to_the_power_four",
  "name": "meter to the power four",
  "names": [
    {
      "value": "meter to the power four",
      "lang": "en"
    }
  ],
  "symbols": {
    "unicode": "m⁴",
    "ascii": "m^4",
    "html": "m<sup>4</sup>",
    "latex": "\\ensuremath{\\mathrm{m^4}}",
    "id": "m^4",
    "mathml": "<msup><mrow><mi mathvariant='normal'>m</mi></mrow><mrow><mn>4</mn></mrow></msup>"
  },
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTu185"
    },
    {
      "type": "unitsml",
      "id": "u:meter_to_the_power_four"
    }
  ],
  "references": [
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/unit/M4"
    }
  ],
  "short": "meter_to_the_power_four",
  "root": false,
  "composite": true,
  "quantities": [
    {
      "id": "NISTq144",
      "name": "second axial moment of area",
      "type": "derived"
    },
    {
      "id": "NISTq145",
      "name": "second polar moment of area",
      "type": "derived"
    }
  ],
  "dimension": {
    "id": "NISTd57",
    "name": "area moment of inertia",
    "expression": "L4",
    "components": [
      {
        "key": "length",
        "symbol": "L",
        "power": 4
      }
    ],
    "dimensionless": false
  },
  "scale": {
    "id": "continuous_ratio",
    "name": "continuous ratio scale"
  },
  "systems": [
    {
      "id": "non-SI_not_acceptable",
      "name": "non-SI and not acceptable",
      "short": "nonsi-unacceptable",
      "acceptable": false
    }
  ],
  "root_units": [
    {
      "power": 4,
      "unit": {
        "id": "NISTu1",
        "name": "metre",
        "symbol": "m"
      },
      "prefix": null
    }
  ]
}