"quantum limit" meaning in English

{
  "etymology_text": "The spectroscopic sense is first attested in the 1920s; the measurement sense was coined by Vladimir Braginsky in a 1967 paper, and was originally restricted to the study of gravitational waves.",
  "forms": [
    {
      "form": "quantum limits",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "quantum limit (plural quantum limits)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Quantum mechanics",
          "orig": "en:Quantum mechanics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "_dis1": "100 0",
          "alt": "SQL",
          "word": "standard quantum limit"
        }
      ],
      "examples": [
        {
          "ref": "1995, Vladimir Borisovich Braginskiĭ, Farid Ya. Khalili, Quantum Measurement, page i",
          "text": "This book is essential reading for all scientists and engineers the potential applications of technology near the quantum limit.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The limit on measurement accuracy at quantum scales due to back-action effects."
      ],
      "id": "en-quantum_limit-en-noun-W-SgOz3S",
      "links": [
        [
          "quantum mechanics",
          "quantum mechanics"
        ],
        [
          "back-action",
          "back-action"
        ]
      ],
      "qualifier": "quantum mechanics",
      "raw_glosses": [
        "(quantum mechanics) The limit on measurement accuracy at quantum scales due to back-action effects."
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Spectroscopy",
          "orig": "en:Spectroscopy",
          "parents": [
            "Analytical chemistry",
            "Optics",
            "Physics",
            "Chemistry",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "8 92",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1935, Donald Stover Piston, The Polarization of X-rays from Thin Targets, page 4",
          "text": "The voltage and wave-length at the quantum limit of the spectrum under investigation are denoted by ν₀ and λ₀.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The shortest wavelength in an X-ray spectrum."
      ],
      "id": "en-quantum_limit-en-noun-lF7uyWWt",
      "links": [
        [
          "spectroscopy",
          "spectroscopy"
        ]
      ],
      "qualifier": "spectroscopy",
      "raw_glosses": [
        "(spectroscopy) The shortest wavelength in an X-ray spectrum."
      ]
    }
  ],
  "word": "quantum limit"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "derived": [
    {
      "alt": "SQL",
      "word": "standard quantum limit"
    }
  ],
  "etymology_text": "The spectroscopic sense is first attested in the 1920s; the measurement sense was coined by Vladimir Braginsky in a 1967 paper, and was originally restricted to the study of gravitational waves.",
  "forms": [
    {
      "form": "quantum limits",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "quantum limit (plural quantum limits)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations",
        "en:Quantum mechanics"
      ],
      "examples": [
        {
          "ref": "1995, Vladimir Borisovich Braginskiĭ, Farid Ya. Khalili, Quantum Measurement, page i",
          "text": "This book is essential reading for all scientists and engineers the potential applications of technology near the quantum limit.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The limit on measurement accuracy at quantum scales due to back-action effects."
      ],
      "links": [
        [
          "quantum mechanics",
          "quantum mechanics"
        ],
        [
          "back-action",
          "back-action"
        ]
      ],
      "qualifier": "quantum mechanics",
      "raw_glosses": [
        "(quantum mechanics) The limit on measurement accuracy at quantum scales due to back-action effects."
      ]
    },
    {
      "categories": [
        "English terms with quotations",
        "en:Spectroscopy"
      ],
      "examples": [
        {
          "ref": "1935, Donald Stover Piston, The Polarization of X-rays from Thin Targets, page 4",
          "text": "The voltage and wave-length at the quantum limit of the spectrum under investigation are denoted by ν₀ and λ₀.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The shortest wavelength in an X-ray spectrum."
      ],
      "links": [
        [
          "spectroscopy",
          "spectroscopy"
        ]
      ],
      "qualifier": "spectroscopy",
      "raw_glosses": [
        "(spectroscopy) The shortest wavelength in an X-ray spectrum."
      ]
    }
  ],
  "word": "quantum limit"
}