原子质量单位

Also known as unified atomic mass unit, Da, amu, atomic mass unit, u

unit of mass defined as ¹⁄₁₂ of the mass of a carbon-12 atom

AI overview

A dalton is a unit of measurement used to express the mass of very tiny objects like atoms and molecules, defined as one-twelfth of the mass of a carbon-12 atom. It matters because scientists need a standard way to compare and describe the weights of individual atoms and molecules, which is essential for chemistry, biology, and physics research.

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Wikidata facts

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conversion to SI unit: 0.00000000000000000000000000166053906892
unit symbol: Da
Wikidata SPARQL query equivalent: wd:Q483261 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
described at URL: www.biologyonline.com/dictionary/unified-atomic-mass-unit

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