electric field gradient

{
  "id": "NISTq165",
  "unitsml_id": "q:electric_field_gradient",
  "name": "electric field gradient",
  "names": [
    {
      "value": "electric field gradient",
      "lang": "en"
    }
  ],
  "short": "electric_field_gradient",
  "type": "derived",
  "dimension": {
    "id": "NISTd74",
    "name": "electric field gradient",
    "expression": "M·T-3·I-1",
    "components": [
      {
        "key": "mass",
        "symbol": "M",
        "power": 1
      },
      {
        "key": "time",
        "symbol": "T",
        "power": -3
      },
      {
        "key": "electric_current",
        "symbol": "I",
        "power": -1
      }
    ],
    "dimensionless": false
  },
  "units": [
    {
      "id": "NISTu260",
      "name": "atomic unit of electric field gradient",
      "symbol": "𝐸ₕ/𝑒𝑎₀²"
    }
  ],
  "unit_count": 1,
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTq165"
    },
    {
      "type": "unitsml",
      "id": "q:electric_field_gradient"
    }
  ],
  "references": [
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/quantitykind/ElectricField"
    }
  ]
}