neper

{
  "id": "NISTu153",
  "unitsml_id": "u:neper",
  "name": "neper",
  "names": [
    {
      "value": "neper",
      "lang": "en"
    },
    {
      "value": "néper",
      "lang": "fr"
    }
  ],
  "symbols": {
    "unicode": "Np",
    "ascii": "Np",
    "html": "Np",
    "latex": "\\ensuremath{\\mathrm{Np}}",
    "id": "Np",
    "mathml": "<mi mathvariant='normal'>Np</mi>"
  },
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTu153"
    },
    {
      "type": "unitsml",
      "id": "u:neper"
    }
  ],
  "references": [
    {
      "type": "normative",
      "authority": "si-digital-framework",
      "uri": "http://si-digital-framework.org/SI/units/neper"
    },
    {
      "type": "informative",
      "authority": "ucum",
      "uri": "ucum:unit:levels:code:Np"
    },
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/unit/NP"
    }
  ],
  "short": "neper",
  "root": true,
  "composite": false,
  "quantities": [
    {
      "id": "NISTq118",
      "name": "level of a field quantity",
      "type": "derived"
    },
    {
      "id": "NISTq119",
      "name": "level of a power quantity",
      "type": "derived"
    },
    {
      "id": "NISTq121",
      "name": "ratio logarithm (Np)",
      "type": "derived"
    },
    {
      "id": "NISTq90",
      "name": "ratio logarithm (B)",
      "type": "derived"
    }
  ],
  "dimension": {
    "id": "NISTd83",
    "name": "level of field quantity",
    "expression": "1",
    "components": [],
    "dimensionless": true
  },
  "scale": {
    "id": "logarithmic_field",
    "name": "logarithmic field scale"
  },
  "systems": [
    {
      "id": "non-SI_acceptable",
      "name": "non-SI but acceptable",
      "short": "nonsi-acceptable",
      "acceptable": true
    }
  ],
  "root_units": null
}