decibel

{
  "id": "NISTu155",
  "unitsml_id": "u:decibel",
  "name": "decibel",
  "names": [
    {
      "value": "decibel",
      "lang": "en"
    }
  ],
  "symbols": {
    "unicode": "dB",
    "ascii": "dB",
    "html": "dB",
    "latex": "\\ensuremath{\\mathrm{dB}}",
    "id": "dB",
    "mathml": "<mi mathvariant='normal'>dB</mi>"
  },
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTu155"
    },
    {
      "type": "unitsml",
      "id": "u:decibel"
    }
  ],
  "references": [
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/unit/DeciB"
    }
  ],
  "short": "decibel",
  "root": false,
  "composite": true,
  "quantities": [
    {
      "id": "NISTq90",
      "name": "ratio logarithm (B)",
      "type": "derived"
    }
  ],
  "dimension": {
    "id": "NISTd67",
    "name": "logarithmic ratio",
    "expression": "1",
    "components": [],
    "dimensionless": true
  },
  "scale": {
    "id": "logarithmic_ratio",
    "name": "logarithmic ratio scale"
  },
  "systems": [
    {
      "id": "non-SI_acceptable",
      "name": "non-SI but acceptable",
      "short": "nonsi-acceptable",
      "acceptable": true
    }
  ],
  "root_units": [
    {
      "power": 1,
      "unit": {
        "id": "NISTu154",
        "name": "bel",
        "symbol": "B"
      },
      "prefix": {
        "id": "NISTp10_-1",
        "name": "deci",
        "symbol": "d"
      }
    }
  ]
}