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(P2645)
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English
mean lifetime
inverse of exponential decay rate; half-life is ln(2) times this value
In more languages
Data type
Quantity
Statements
instance of
Wikidata property for physical quantities
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has characteristic
mean
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subproperty of
duration
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Wikidata item of this property
mean lifetime
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Wikidata property example
neutron
mean lifetime
880.3±1.1
second
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photon
mean lifetime
1
infinity
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property usage tracking category
Category:Pages using Wikidata property P2645
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related property
half-life
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property proposal discussion
https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/47#P2645
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Constraints
property constraint
allowed units constraint
item of property constraint
second
minute
hour
day
week
annum
millisecond
microsecond
nanosecond
picosecond
femtosecond
attosecond
infinity
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property scope constraint
constraint status
mandatory constraint
property scope
as main value
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allowed-entity-types constraint
item of property constraint
Wikibase item
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