"Sommerfeld's constant" meaning in All languages combined

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  "lang_code": "en",
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      "glosses": [
        "The fine-structure constant."
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        "(physics) The fine-structure constant."
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  "word": "Sommerfeld's constant"
}

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  "etymology_text": "Named after German physicist Arnold Sommerfeld.",
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  "lang_code": "en",
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        "en:Physics"
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      "glosses": [
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  "word": "Sommerfeld's constant"
}