"field emission" meaning in English

{
  "forms": [
    {
      "form": "field emissions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "field emission (countable and uncountable, plural field emissions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Electricity",
          "orig": "en:Electricity",
          "parents": [
            "Electromagnetism",
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "field emission microscope"
        },
        {
          "word": "field emission microscopy"
        }
      ],
      "examples": [
        {
          "ref": "2006, Annick Loiseau, Understanding Carbon Nanotubes: From Basics to Applications:",
          "text": "Field emission was described for the first time at the end of the 19th century. Thorough experiments in the 1920s showed clearly that this emission occurred under high electric field and was not related to thermoelectronic emission.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The emission of electrons from a metal or semiconductor, under the influence of a strong electric field, by quantum tunnelling."
      ],
      "id": "en-field_emission-en-noun-2PyVrpEa",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "electron",
          "electron"
        ],
        [
          "metal",
          "metal"
        ],
        [
          "semiconductor",
          "semiconductor"
        ],
        [
          "influence",
          "influence"
        ],
        [
          "electric field",
          "electric field"
        ],
        [
          "quantum tunnelling",
          "quantum tunnelling"
        ]
      ],
      "raw_glosses": [
        "(physics) The emission of electrons from a metal or semiconductor, under the influence of a strong electric field, by quantum tunnelling."
      ],
      "synonyms": [
        {
          "word": "field electron emission"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "field emission"
      ]
    }
  ],
  "word": "field emission"
}

{
  "derived": [
    {
      "word": "field emission microscope"
    },
    {
      "word": "field emission microscopy"
    }
  ],
  "forms": [
    {
      "form": "field emissions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "field emission (countable and uncountable, plural field emissions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Electricity",
        "en:Physics"
      ],
      "examples": [
        {
          "ref": "2006, Annick Loiseau, Understanding Carbon Nanotubes: From Basics to Applications:",
          "text": "Field emission was described for the first time at the end of the 19th century. Thorough experiments in the 1920s showed clearly that this emission occurred under high electric field and was not related to thermoelectronic emission.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The emission of electrons from a metal or semiconductor, under the influence of a strong electric field, by quantum tunnelling."
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "electron",
          "electron"
        ],
        [
          "metal",
          "metal"
        ],
        [
          "semiconductor",
          "semiconductor"
        ],
        [
          "influence",
          "influence"
        ],
        [
          "electric field",
          "electric field"
        ],
        [
          "quantum tunnelling",
          "quantum tunnelling"
        ]
      ],
      "raw_glosses": [
        "(physics) The emission of electrons from a metal or semiconductor, under the influence of a strong electric field, by quantum tunnelling."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "field emission"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "field electron emission"
    }
  ],
  "word": "field emission"
}