"Pockels effect" meaning in English

{
  "etymology_text": "Named after Friedrich Carl Alwin Pockels.",
  "forms": [
    {
      "form": "Pockels effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Pockels effect (plural Pockels 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"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Optics",
          "orig": "en:Optics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An effect that changes or produces birefringence in an optical medium induced by electric field."
      ],
      "id": "en-Pockels_effect-en-noun-o19n4yJE",
      "links": [
        [
          "birefringence",
          "birefringence"
        ],
        [
          "optical",
          "optical"
        ],
        [
          "electric field",
          "electric field"
        ]
      ],
      "wikipedia": [
        "Friedrich Carl Alwin Pockels"
      ]
    }
  ],
  "word": "Pockels effect"
}

{
  "etymology_text": "Named after Friedrich Carl Alwin Pockels.",
  "forms": [
    {
      "form": "Pockels effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Pockels effect (plural Pockels effects)",
      "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 entries with topic categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Optics"
      ],
      "glosses": [
        "An effect that changes or produces birefringence in an optical medium induced by electric field."
      ],
      "links": [
        [
          "birefringence",
          "birefringence"
        ],
        [
          "optical",
          "optical"
        ],
        [
          "electric field",
          "electric field"
        ]
      ],
      "wikipedia": [
        "Friedrich Carl Alwin Pockels"
      ]
    }
  ],
  "word": "Pockels effect"
}