"population inversion" meaning in English

{
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    {
      "form": "population inversions",
      "tags": [
        "plural"
      ]
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  ],
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    {
      "args": {},
      "expansion": "population inversion (plural population inversions)",
      "name": "en-noun"
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  "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"
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          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
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        }
      ],
      "glosses": [
        "The creation of a system in which more atoms or molecules are in an excited state than in a ground state."
      ],
      "id": "en-population_inversion-en-noun-BayQ0NoK",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "atom",
          "atom"
        ],
        [
          "molecule",
          "molecule"
        ],
        [
          "excited state",
          "excited state"
        ],
        [
          "ground state",
          "ground state"
        ]
      ],
      "raw_glosses": [
        "(physics) The creation of a system in which more atoms or molecules are in an excited state than in a ground state."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "creation of a system",
          "word": "käänteinen miehitys"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "creation of a system",
          "word": "populaatioinversio"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "creation of a system",
          "tags": [
            "feminine"
          ],
          "word": "Besetzungsinversion"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "creation of a system",
          "word": "inversión de población"
        }
      ],
      "wikipedia": [
        "population inversion"
      ]
    }
  ],
  "word": "population inversion"
}

{
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    {
      "form": "population inversions",
      "tags": [
        "plural"
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      "expansion": "population inversion (plural population inversions)",
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  "lang_code": "en",
  "pos": "noun",
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        "Terms with Finnish translations",
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      "glosses": [
        "The creation of a system in which more atoms or molecules are in an excited state than in a ground state."
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "atom",
          "atom"
        ],
        [
          "molecule",
          "molecule"
        ],
        [
          "excited state",
          "excited state"
        ],
        [
          "ground state",
          "ground state"
        ]
      ],
      "raw_glosses": [
        "(physics) The creation of a system in which more atoms or molecules are in an excited state than in a ground state."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "population inversion"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "creation of a system",
      "word": "käänteinen miehitys"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "creation of a system",
      "word": "populaatioinversio"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "creation of a system",
      "tags": [
        "feminine"
      ],
      "word": "Besetzungsinversion"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "creation of a system",
      "word": "inversión de población"
    }
  ],
  "word": "population inversion"
}