"eureka effect" meaning in English

{
  "forms": [
    {
      "form": "eureka effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "eureka effect (plural eureka effects)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "2004 September 23, London Review of Books",
          "text": "There is no serendipity without a flash of insight from left field, an oblique eureka effect.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The human experience of feeling a sudden sense of insight upon making a discovery or realization."
      ],
      "id": "en-eureka_effect-en-noun-GbY0NKf5",
      "links": [
        [
          "insight",
          "insight"
        ],
        [
          "discovery",
          "discovery"
        ],
        [
          "realization",
          "realization"
        ]
      ],
      "related": [
        {
          "word": "eureka"
        },
        {
          "word": "eureka moment"
        }
      ],
      "synonyms": [
        {
          "word": "aha effect"
        }
      ],
      "wikipedia": [
        "eureka effect"
      ]
    }
  ],
  "word": "eureka effect"
}

{
  "forms": [
    {
      "form": "eureka effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "eureka effect (plural eureka effects)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "eureka"
    },
    {
      "word": "eureka moment"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2004 September 23, London Review of Books",
          "text": "There is no serendipity without a flash of insight from left field, an oblique eureka effect.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The human experience of feeling a sudden sense of insight upon making a discovery or realization."
      ],
      "links": [
        [
          "insight",
          "insight"
        ],
        [
          "discovery",
          "discovery"
        ],
        [
          "realization",
          "realization"
        ]
      ],
      "synonyms": [
        {
          "word": "aha effect"
        }
      ],
      "wikipedia": [
        "eureka effect"
      ]
    }
  ],
  "word": "eureka effect"
}