the.com/kilogram
The only unit that fired its sacred Paris lump for a quantum upgrade.
former bossA platinum cylinder under three glass bells near Paris
the redefinitionSince 2019, defined by Planck's constant instead
weight lossThe old prototype mysteriously shed micrograms over decades
only with prefixThe lone base unit named with kilo built in
a liter equalsRoughly one kilogram of water, by clever design