"Emmert's law" meaning in All languages combined

{
  "etymology_text": "Named after Emil Emmert (1844–1911), who first described it in 1881.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
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          "name": "English entries with incorrect language header",
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          "source": "w"
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      ],
      "glosses": [
        "A law stating that objects that generate retinal images of the same size will look different in physical size (linear size) if they appear to be located at different distances."
      ],
      "id": "en-Emmert's_law-en-name-nmzfR8LX",
      "links": [
        [
          "object",
          "object"
        ],
        [
          "retinal",
          "retinal"
        ],
        [
          "image",
          "image"
        ],
        [
          "size",
          "size"
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        [
          "different",
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        [
          "physical",
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        [
          "distance",
          "distance"
        ]
      ],
      "wikipedia": [
        "Emmert's law"
      ]
    }
  ],
  "word": "Emmert's law"
}

{
  "etymology_text": "Named after Emil Emmert (1844–1911), who first described it in 1881.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Emmert's law",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
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        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A law stating that objects that generate retinal images of the same size will look different in physical size (linear size) if they appear to be located at different distances."
      ],
      "links": [
        [
          "object",
          "object"
        ],
        [
          "retinal",
          "retinal"
        ],
        [
          "image",
          "image"
        ],
        [
          "size",
          "size"
        ],
        [
          "different",
          "different"
        ],
        [
          "physical",
          "physical"
        ],
        [
          "distance",
          "distance"
        ]
      ],
      "wikipedia": [
        "Emmert's law"
      ]
    }
  ],
  "word": "Emmert's law"
}