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However or whenever they measure the prototype kilogram, it weighs[0] exactly 1kg by definition. [0] Well, not any more as the kilogram was redefined in 2019
by M2Ys4U 5y ago
However or whenever they measure the prototype kilogram, it weighs[0] exactly 1kg by definition.
[0] Well, not any more as the kilogram was redefined in 2019