Massive News: Kilogram Redefinition Heads Into Crucial Test

Superprecise standard masses are on their way to Paris for a critical weigh-in

3 min read

Massive News: Kilogram Redefinition Heads Into Crucial Test
Masses in Motion: Canada will send a cousin of this kilogram mass to Paris for a dry run of the unit’s redefinition. It’ll be joined by masses from around the world.
Photo: National Research Council of Canada

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