"Atwood number" meaning in English

{
  "etymology_text": "Probably named after George Atwood.",
  "forms": [
    {
      "form": "Atwood numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Atwood number (plural Atwood numbers)",
      "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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        },
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        {
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          "langcode": "en",
          "name": "Fluid dynamics",
          "orig": "en:Fluid dynamics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A dimensionless number used in the study of hydrodynamic instabilities in density stratified flows: A=(ρ₁-ρ₂)/(ρ₁+ρ₂), where ρ₁ is the density of the heavier fluid and ρ₂ is the density of the lighter fluid."
      ],
      "id": "en-Atwood_number-en-noun-zojKgCtp",
      "links": [
        [
          "fluid dynamics",
          "fluid dynamics"
        ],
        [
          "dimensionless",
          "dimensionless"
        ],
        [
          "hydrodynamic",
          "hydrodynamic"
        ],
        [
          "instabilities",
          "instability"
        ],
        [
          "stratified",
          "stratified"
        ]
      ],
      "raw_glosses": [
        "(fluid dynamics) A dimensionless number used in the study of hydrodynamic instabilities in density stratified flows: A=(ρ₁-ρ₂)/(ρ₁+ρ₂), where ρ₁ is the density of the heavier fluid and ρ₂ is the density of the lighter fluid."
      ],
      "topics": [
        "fluid-dynamics",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "George Atwood"
      ]
    }
  ],
  "word": "Atwood number"
}

{
  "etymology_text": "Probably named after George Atwood.",
  "forms": [
    {
      "form": "Atwood numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
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      "expansion": "Atwood number (plural Atwood numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
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        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Fluid dynamics"
      ],
      "glosses": [
        "A dimensionless number used in the study of hydrodynamic instabilities in density stratified flows: A=(ρ₁-ρ₂)/(ρ₁+ρ₂), where ρ₁ is the density of the heavier fluid and ρ₂ is the density of the lighter fluid."
      ],
      "links": [
        [
          "fluid dynamics",
          "fluid dynamics"
        ],
        [
          "dimensionless",
          "dimensionless"
        ],
        [
          "hydrodynamic",
          "hydrodynamic"
        ],
        [
          "instabilities",
          "instability"
        ],
        [
          "stratified",
          "stratified"
        ]
      ],
      "raw_glosses": [
        "(fluid dynamics) A dimensionless number used in the study of hydrodynamic instabilities in density stratified flows: A=(ρ₁-ρ₂)/(ρ₁+ρ₂), where ρ₁ is the density of the heavier fluid and ρ₂ is the density of the lighter fluid."
      ],
      "topics": [
        "fluid-dynamics",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "George Atwood"
      ]
    }
  ],
  "word": "Atwood number"
}