Assertion: unit's definition | /r/CapableOf | remain unchanged
Facets:
value: since 1946
type: TEMPORAL
value: until 1961
type: TEMPORAL
Source sentences:
text: This definition remained unchanged until 1961.
text: The definition of the joule as J=kg⋅m2⋅s-2 has remained unchanged since 1946, but the joule as a derived unit has inherited changes in the definitions of the second (in 1960 and 1967), the metre (in 1983) and the kilogram (in 2019).