"Planck time" meaning in English

See Planck time in All languages combined, or Wiktionary

Noun

Forms: Planck times [plural], t_P [abbreviation]
Head templates: {{en-noun|abbr=t_P}} Planck time (plural Planck times, abbreviation t_P)
  1. (physics) A natural unit of time, equivalent to the time it takes light to traverse one Planck length; it is the duration of time at which quantum gravity effects are expected to become significant. Related terms: Planck epoch, Planck length, Planck unit Translations (unit of time, believed to be the scale at which quantum gravity effects become significant): プランク時間 (puranku jikan) (Japanese), 플랑크 시간 (peullangkeu sigan) (Korean), czas Plancka [masculine] (Polish)

Inflected forms

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      "form": "Planck times",
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          "ref": "2023 October 9, Dennis Overbye, “The Science Nobel Winners Were Short and Fast”, in The New York Times, archived from the original on 12 Oct 2023:",
          "text": "As Dr. Feynman noted, there are still shorter scales of time and distance to go before we reach the ultimate limits imposed by quantum physics: the Planck length, 10^-33 of a centimeter, and the Planck time, 10^-43 of a second. Both are named for the German physicist Max Planck, who made the breakthrough that led to quantum mechanics.",
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        "A natural unit of time, equivalent to the time it takes light to traverse one Planck length; it is the duration of time at which quantum gravity effects are expected to become significant."
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        "(physics) A natural unit of time, equivalent to the time it takes light to traverse one Planck length; it is the duration of time at which quantum gravity effects are expected to become significant."
      ],
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          "word": "플랑크 시간"
        },
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        }
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    {
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          "text": "As Dr. Feynman noted, there are still shorter scales of time and distance to go before we reach the ultimate limits imposed by quantum physics: the Planck length, 10^-33 of a centimeter, and the Planck time, 10^-43 of a second. Both are named for the German physicist Max Planck, who made the breakthrough that led to quantum mechanics.",
          "type": "quotation"
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      ],
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      ],
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      ],
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  "translations": [
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      "code": "ja",
      "lang": "Japanese",
      "lang_code": "ja",
      "roman": "puranku jikan",
      "sense": "unit of time, believed to be the scale at which quantum gravity effects become significant",
      "word": "プランク時間"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "lang_code": "ko",
      "roman": "peullangkeu sigan",
      "sense": "unit of time, believed to be the scale at which quantum gravity effects become significant",
      "word": "플랑크 시간"
    },
    {
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      "lang": "Polish",
      "lang_code": "pl",
      "sense": "unit of time, believed to be the scale at which quantum gravity effects become significant",
      "tags": [
        "masculine"
      ],
      "word": "czas Plancka"
    }
  ],
  "word": "Planck time"
}

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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2026-03-25 from the enwiktionary dump dated 2026-03-03 using wiktextract (05c257f and 9d9a410). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

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