"Newton's cradle" meaning in English

{
  "etymology_text": "Named after Isaac Newton.",
  "forms": [
    {
      "form": "Newton's cradles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Newton's cradle (plural Newton's cradles)",
      "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": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Energy",
          "orig": "en:Energy",
          "parents": [
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Gravity",
          "orig": "en:Gravity",
          "parents": [
            "Acceleration",
            "Astrophysics",
            "Mechanics",
            "Physics",
            "Astronomy",
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mechanics",
          "orig": "en:Mechanics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A device that demonstrates conservation of momentum and energy via a series of swinging spheres. When a sphere at one end is lifted and released, the resulting force travels through the line and pushes the opposite sphere upward, repeating the process as it swings back down."
      ],
      "id": "en-Newton's_cradle-en-noun-4NvkUgkK",
      "links": [
        [
          "conservation",
          "conservation"
        ],
        [
          "momentum",
          "momentum"
        ],
        [
          "energy",
          "energy"
        ],
        [
          "swing",
          "swing"
        ],
        [
          "sphere",
          "sphere"
        ]
      ],
      "synonyms": [
        {
          "word": "Executive Ball Clicker"
        },
        {
          "word": "Newton's Cradle"
        }
      ],
      "wikipedia": [
        "Isaac Newton",
        "Newton's cradle"
      ]
    }
  ],
  "word": "Newton's cradle"
}

{
  "etymology_text": "Named after Isaac Newton.",
  "forms": [
    {
      "form": "Newton's cradles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Newton's cradle (plural Newton's cradles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Energy",
        "en:Gravity",
        "en:Mechanics"
      ],
      "glosses": [
        "A device that demonstrates conservation of momentum and energy via a series of swinging spheres. When a sphere at one end is lifted and released, the resulting force travels through the line and pushes the opposite sphere upward, repeating the process as it swings back down."
      ],
      "links": [
        [
          "conservation",
          "conservation"
        ],
        [
          "momentum",
          "momentum"
        ],
        [
          "energy",
          "energy"
        ],
        [
          "swing",
          "swing"
        ],
        [
          "sphere",
          "sphere"
        ]
      ],
      "wikipedia": [
        "Isaac Newton",
        "Newton's cradle"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Executive Ball Clicker"
    },
    {
      "word": "Newton's Cradle"
    }
  ],
  "word": "Newton's cradle"
}