ratio logarithm (B)

{
  "id": "NISTq90",
  "unitsml_id": "q:logarithmic_ratio_quantities",
  "name": "ratio logarithm (B)",
  "names": [
    {
      "value": "ratio logarithm (B)",
      "lang": "en"
    },
    {
      "value": "logarithmic ratio quantities (power-like quantities using decimal logarithms)",
      "lang": "en"
    },
    {
      "value": "logarithme d'un rapport (B)",
      "lang": "fr"
    }
  ],
  "short": "logarithmic_ratio_quantities",
  "type": "derived",
  "dimension": {
    "id": "NISTd67",
    "name": "logarithmic ratio",
    "expression": "1",
    "components": [],
    "dimensionless": true
  },
  "units": [
    {
      "id": "NISTu153",
      "name": "neper",
      "symbol": "Np"
    },
    {
      "id": "NISTu154",
      "name": "bel",
      "symbol": "B"
    },
    {
      "id": "NISTu155",
      "name": "decibel",
      "symbol": "dB"
    },
    {
      "id": "NISTu381",
      "name": "dBm",
      "symbol": "dB_mW"
    }
  ],
  "unit_count": 4,
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTq90"
    },
    {
      "type": "unitsml",
      "id": "q:logarithmic_ratio_quantities"
    }
  ],
  "references": [
    {
      "type": "normative",
      "authority": "si-digital-framework",
      "uri": "http://si-digital-framework.org/quantities/RLGB"
    },
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/quantitykind/LinearLogarithmicRatio"
    }
  ]
}