Assertion: kilogram | /r/HasProperty | defined in terms of planck’s constant
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Source sentences:
text: Physicists have known for decades that the kilogram could be defined in terms of Planck’s constant, but it was not until recently that metrology advanced enough to measure the number with such precision that the world would accept a new definition.
text: In October 2010, the CIPM voted to submit a resolution for consideration at the General Conference on Weights and Measures (CGPM), to "take note of an intention" that the kilogram be defined in terms of the Planck constant, h (which has dimensions of energy times time, thus mass × length2 / time) together with other physical constants.