second

{
  "id": "NISTu3",
  "unitsml_id": "u:second",
  "name": "second",
  "names": [
    {
      "value": "second",
      "lang": "en"
    },
    {
      "value": "seconde",
      "lang": "fr"
    }
  ],
  "symbols": {
    "unicode": "″",
    "ascii": "\"",
    "html": "″",
    "latex": "\\ensuremath{\\mathrm{''}}",
    "id": "dprime_s",
    "mathml": "<mi mathvariant='normal'>&#8243;</mi>"
  },
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTu3"
    },
    {
      "type": "unitsml",
      "id": "u:second"
    }
  ],
  "references": [
    {
      "type": "normative",
      "authority": "si-digital-framework",
      "uri": "http://si-digital-framework.org/SI/units/second"
    },
    {
      "type": "informative",
      "authority": "ucum",
      "uri": "ucum:base-unit:code:s"
    },
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/unit/SEC"
    }
  ],
  "short": "second",
  "root": true,
  "composite": false,
  "quantities": [
    {
      "id": "NISTq109",
      "name": "period duration",
      "type": "derived"
    },
    {
      "id": "NISTq110",
      "name": "time constant",
      "type": "derived"
    },
    {
      "id": "NISTq3",
      "name": "time",
      "type": "base"
    }
  ],
  "dimension": {
    "id": "NISTd3",
    "name": "time",
    "expression": "T",
    "components": [
      {
        "key": "time",
        "symbol": "T",
        "power": 1
      }
    ],
    "dimensionless": false
  },
  "scale": {
    "id": "continuous_ratio",
    "name": "continuous ratio scale"
  },
  "systems": [
    {
      "id": "SI_base",
      "name": "SI base units",
      "short": "si-base",
      "acceptable": true
    },
    {
      "id": "SI_compatible",
      "name": "Units compatible with SI",
      "short": "si-compatible",
      "acceptable": true
    }
  ],
  "root_units": null
}