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unit:PlanckTime

http://qudt.org/vocab/unit/PlanckTime
Types: qudt:Unit
PredicateObject
rdf:type qudt:Unit
dcterms:description In physics, the Planck time, denoted by \(t_P\), is the unit of time in the system of natural units known as Planck units. It is the time required for light to travel, in a vacuum, a distance of 1 Planck length. The unit is named after Max Planck, who was the first to propose it. The formula for \(\textit{PlankTime}\) is: \[ \\ t_P \equiv \sqrt{\frac{\hbar G}{c^5}} \approx 5.39106(32) \times 10^{-44} s\] where, \(c\) is the speed of light in a vacuum, \(\hbar\) is the reduced Planck's constant (defined as \(\hbar = \frac{h}{2 \pi}\) and \(G\) is the gravitational constant. The two digits between parentheses denote the standard error of the estimated value.
qudt:applicableSystem sou:PLANCK
qudt:conversionMultiplier 0.000000000000000000000000000000000000000000000000539124
qudt:conversionMultiplierSN 5.39124E-49
qudt:dbpediaMatch http://dbpedia.org/resource/Planck_time
qudt:hasDimensionVector qkdv:A0E0L0I0M0H0T1D0
qudt:hasQuantityKind quantitykind:Time
qudt:informativeReference
qudt:latexSymbol \(t_P\)
qudt:scalingOf unit:SEC
qudt:symbol “tₚ”
qudt:wikidataMatch http://www.wikidata.org/entity/Q202642
rdfs:isDefinedBy http://qudt.org/3.1.11/vocab/unit
rdfs:label
  • “Planck Time”
  • “Planck Time”@en
Generated 2026-02-20T09:46:38.851-05:00