"rocket equation" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "rocket equation (uncountable)",
      "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": "topical",
          "langcode": "en",
          "name": "Functions",
          "orig": "en:Functions",
          "parents": [
            "Algebra",
            "Calculus",
            "Geometry",
            "Mathematical analysis",
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rocketry",
          "orig": "en:Rocketry",
          "parents": [
            "Astronautics",
            "Applied sciences",
            "Space",
            "Sciences",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Space access",
          "orig": "en:Space access",
          "parents": [
            "Astronautics",
            "Applied sciences",
            "Space",
            "Sciences",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The equation for how much delta-v a rocket produces: Δv = vₑ ln(m₀/m₁); where Δv is delta-v, vₑ is effective exhaust velocity, ln is the natural log function, m₀ is initial mass of the rocket, and m₁ is final mass of the rocket."
      ],
      "id": "en-rocket_equation-en-noun-w649MNZb",
      "links": [
        [
          "delta-v",
          "delta-v"
        ],
        [
          "natural log",
          "natural log"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "New Horizons"
      ]
    }
  ],
  "word": "rocket equation"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "rocket equation (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "en:Functions",
        "en:Rocketry",
        "en:Space access"
      ],
      "glosses": [
        "The equation for how much delta-v a rocket produces: Δv = vₑ ln(m₀/m₁); where Δv is delta-v, vₑ is effective exhaust velocity, ln is the natural log function, m₀ is initial mass of the rocket, and m₁ is final mass of the rocket."
      ],
      "links": [
        [
          "delta-v",
          "delta-v"
        ],
        [
          "natural log",
          "natural log"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "New Horizons"
      ]
    }
  ],
  "word": "rocket equation"
}