"Helmholtz free energy" meaning in English

{
  "etymology_text": "For Hermann von Helmholtz, German physicist.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "langcode": "en",
          "name": "Energy",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physical quantities",
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          "name": "Physics",
          "orig": "en:Physics",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Thermodynamics",
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      "examples": [
        {
          "text": "A=U-TS where A is Helmholtz free energy, U is internal energy, T is temperature, and S is entropy."
        }
      ],
      "glosses": [
        "A measure of the useful work obtainable from a constant temperature, constant volume thermodynamic system; more precisely, the difference between internal energy (of a system) and the product of its absolute temperature and entropy."
      ],
      "id": "en-Helmholtz_free_energy-en-noun-LXR2~v55",
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          "thermodynamics",
          "thermodynamics"
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          "work",
          "work"
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          "temperature",
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        [
          "volume",
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          "thermodynamic",
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        [
          "absolute temperature",
          "absolute temperature"
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        [
          "entropy",
          "entropy"
        ]
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      "raw_glosses": [
        "(physics, thermodynamics) A measure of the useful work obtainable from a constant temperature, constant volume thermodynamic system; more precisely, the difference between internal energy (of a system) and the product of its absolute temperature and entropy."
      ],
      "related": [
        {
          "word": "Gibbs free energy"
        }
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        "natural-sciences",
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      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "measure of the useful work from a constant temperature system etc.",
          "word": "亥姆霍茲自由能"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "Hàimǔhuòzī zìyóu néng",
          "sense": "measure of the useful work from a constant temperature system etc.",
          "word": "亥姆霍兹自由能"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "measure of the useful work from a constant temperature system etc.",
          "word": "Helmholtzin vapaa energia"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "svobódnaja enérgija Gelʹmgólʹca",
          "sense": "measure of the useful work from a constant temperature system etc.",
          "tags": [
            "feminine"
          ],
          "word": "свобо́дная эне́ргия Гельмго́льца"
        }
      ],
      "wikipedia": [
        "Helmholtz free energy",
        "Hermann von Helmholtz"
      ]
    }
  ],
  "word": "Helmholtz free energy"
}

{
  "etymology_text": "For Hermann von Helmholtz, German physicist.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Gibbs free energy"
    }
  ],
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      "examples": [
        {
          "text": "A=U-TS where A is Helmholtz free energy, U is internal energy, T is temperature, and S is entropy."
        }
      ],
      "glosses": [
        "A measure of the useful work obtainable from a constant temperature, constant volume thermodynamic system; more precisely, the difference between internal energy (of a system) and the product of its absolute temperature and entropy."
      ],
      "links": [
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          "physics",
          "physics"
        ],
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          "thermodynamics",
          "thermodynamics"
        ],
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          "work",
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        ],
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          "temperature",
          "temperature"
        ],
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          "volume",
          "volume"
        ],
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          "thermodynamic",
          "thermodynamic"
        ],
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          "absolute temperature",
          "absolute temperature"
        ],
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          "entropy",
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      "raw_glosses": [
        "(physics, thermodynamics) A measure of the useful work obtainable from a constant temperature, constant volume thermodynamic system; more precisely, the difference between internal energy (of a system) and the product of its absolute temperature and entropy."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics",
        "thermodynamics"
      ],
      "wikipedia": [
        "Helmholtz free energy",
        "Hermann von Helmholtz"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "measure of the useful work from a constant temperature system etc.",
      "word": "亥姆霍茲自由能"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "Hàimǔhuòzī zìyóu néng",
      "sense": "measure of the useful work from a constant temperature system etc.",
      "word": "亥姆霍兹自由能"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "measure of the useful work from a constant temperature system etc.",
      "word": "Helmholtzin vapaa energia"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "svobódnaja enérgija Gelʹmgólʹca",
      "sense": "measure of the useful work from a constant temperature system etc.",
      "tags": [
        "feminine"
      ],
      "word": "свобо́дная эне́ргия Гельмго́льца"
    }
  ],
  "word": "Helmholtz free energy"
}