Assertion: kilogram | /r/HasProperty | redefined in terms of the planck constant
Facets:
value: on 16 november
type: TEMPORAL
value: as of 20 may
type: TEMPORAL
Source sentences:
text: 2019: as of 20 May, the kilogram is redefined in terms of the Planck constant as approved by the General Conference on Weights and Measures (CGPM) on 16 November 2018.
text: At its 2011 meeting, the General Conference on Weights and Measures agreed in principle that the kilogram should be redefined in terms of the Planck constant, but deferred a final decision until its next meeting, scheduled for 2014.
text: For example, the metre was redefined in 1983 by the CGPM in terms of the speed of light, the kilogram was redefined in 2019 in terms of the Planck constant and the international yard was defined in 1960 by the governments of the United States, United Kingdom, Australia and South Africa as being exactly 0.9144 metres.