bn:00067378n
Noun Concept
Categories: Physical quantities, Theory of relativity, Energy (physics), Mass
EN
rest mass  invariant mass  rest mass (invariant mass) or rest energy  intrinsic energy  mass
EN
(physics) the mass of a body as measured when the body is at rest relative to an observer, an inherent property of the body WordNet 3.0
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EN
(physics) the mass of a body as measured when the body is at rest relative to an observer, an inherent property of the body WordNet 3.0 & Open English WordNet
The invariant mass, rest mass, intrinsic mass, proper mass, or in the case of bound systems simply mass, is the portion of the total mass of an object or system of objects that is independent of the overall motion of the system. Wikipedia
Physical quantity Wikidata
The mass of a body when it is not moving relative to an observer. Wiktionary
Mass of a body when it is not moving. Wiktionary (translation)
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