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(P2114)
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English
half-life
time required for the amount of something to fall to half its initial value
In more languages
Data type
Quantity
Statements
instance of
Wikidata property for physical quantities
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Wikidata property related to time and duration
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subproperty of
duration
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Wikidata item of this property
half-life
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Wikidata property example
uranium-235
half-life
704,000,000±1,000,000
annum
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neutron
half-life
10.183±0.017
minute
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type of unit for this property
unit of time
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stability of property value
never changes
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related property
mean lifetime
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property proposal discussion
https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/35#P2114
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Constraints
property constraint
single-value constraint
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allowed units constraint
item of property constraint
second
minute
hour
day
week
annum
millisecond
microsecond
nanosecond
picosecond
femtosecond
attosecond
yoctosecond
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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
constraint status
mandatory constraint
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