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10-2

rest mass, proper mass

URNurn:iso:std:iso:80000:-10:ed-2:en:item:10-2

https://metanorma.github.io/isq-smart/quantities/part-10/t10-2
urn:iso:std:iso:80000:-10:ed-2:en:item:10-2

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-10:ed-2:en:item:10-2

IEC

urn:iec:std:iec:80000-10:2019:::item:10-2

Designations

ENrest mass

FRmasse au repos

ENproper mass

FRmasse propre

Symbol

m (X)

m_{X}

Notation systems

Rendered

m (X)

Rendered

m_{X}

AsciiMath

m("X")

AsciiMath

m_"X"

LaTeX

m ( \text{X} )

LaTeX

m_{\text{X}}

Definition

for particle $X$ , mass (ISO 80000-4: Mechanics) of that particle at rest in an inertial frame

pour une particule $X$ , masse (ISO 80000-4: Mechanics) de cette particule au repos dans un référentiel inertiel

Units

k g

kilogram

View related quantities →

u

unified atomic mass unit

View related quantities →

D a

dalton

View related quantities →

Notes

[example] ====

$m (H_{2} O)$ for a water molecule, $m_{e}$ for an electron.

Rest mass is often denoted $m_{0}$ .

$1 unitsml(u)$ is equal to $1 / 12$ times the mass of a free carbon 12 atom, at rest and in its ground state.

1 unitsml(Da) = 1 unitsml(u)

====

[example] ====

$m (H_{2} O)$ pour une molécule d'eau, $m_{e}$ pour un électron.

La masse au repos est souvent notée $m_{0}$ .

$1 unitsml(u)$ est égal à $1 / 12$ de la masse d'un atome libre de carbone 12, au repos et dans son état fondamental.

1 unitsml(Da) = 1 unitsml(u)

====

Referenced by

rest energy atomic mass nuclidic mass Bohr radius Bohr magneton nuclear magneton Larmor angular frequency electron radius Compton wavelength mass excess mass defect

Concept HierarchyPendrill (2024)

Mmass-type quantitiesLevel 0 · Kind

Broader concepts

◇ mass-type quantities

Characterizes

● atom● electron● molecule

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t10-2

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	10-2
skosxl:prefLabel	"rest mass"@en
skosxl:altLabel	"proper mass"@en"m("X")"@en"m_"X""@en
skos:definition	for particle stem:["X"], mass (<<iso80000-4>>) of that particle at rest in an inertial frame
skos:note	[example] ==== stem:[m("H"_2"O")] for a water molecule, stem:[m_"e"] for an electron. Rest mass is often denoted stem:[…
isq:hasUnit	kg (kilogram)u (unified atomic mass unit)Da (dalton)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-10

Related Entities

isq:QuantityShape isq:part-10 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry

Definition

Units

Notes

Referenced by

Broader concepts

Characterizes

Ontology isq:Quantitysmart:TermEntry

Class Hierarchy

Instance IRI

Properties

Related Entities

Ontology
isq:Quantity smart:TermEntry