Use the selectors to place any two published Limits side by side, then use each title to open its canonical record.
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Limits RegistryRegistry comparison
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Compare the question, direction, publication state, and source trail. Similar-looking numbers often measure entirely different things.
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When two numbers look comparable, follow both canonical pages and inspect their specifications and evidence before drawing a conclusion.
Category
Physics
Physics
Direction
MAXIMIZE
MAXIMIZE
Status
OPEN
OPEN
Question
The 2022 CODATA recommended value of alpha particle-electron mass ratio, retained with its published standard uncertainty.
The 2022 CODATA recommended value of alpha particle mass, retained with its published standard uncertainty.