Difference between revisions of "Density"
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|abbr=''ρ'', ''C'', ''D'' | |abbr=''ρ'', ''C'', ''D'' | ||
|description='''Density''' is frequently a quantity divided by volume: mass density or mass concentration is mass per volume, ''M''·''V''<sup>-1</sup> [kg·m<sup>-3</sup>]; radiant energy density is radiant energy per volume, ''Q''·''V''<sup>-1</sup> [J·m<sup>-3</sup>]; charge density is charge per volume, ''Q''·''V''<sup>-1</sup> [C·m<sup>-3</sup>]. However, [[electric current density]] is current divided by area, ''j''=''I''·''A''<sup>-1</sup> [C·m<sup>-2</sup>]. Number density of entities or number concentration is numbers per volume, ''C''<sub>B</sub> = ''N''<sub>B</sub>·''V''<sup>-1</sup> [x·m<sup>-3</sup>]. In contrast, the amount-of-substance [[concentration]], ''c''<sub>B</sub> = ''n''<sub>B</sub>·''V''<sup>-1</sup> [mol·m<sup>-3</sup>] is not called a ''substance density'' ([[Cohen 2008 IUPAC Green Book |IUPAC]]). Thus the [[sample mass concentration]] is ''C<sub><u>m</u>X</sub>'' = ''m<sub>X</sub>''·''V''<sup>-1</sup> [kg·m<sup>-3</sup>], the [[mitochondrial concentration]] is ''C<sub>mtE</sub>'' = ''mtE''·''V''<sup>-1</sup> [mtEU·m<sup>-3</sup>], whereas the specific [[mitochondrial density]] is ''D<sub>mtE</sub>'' = ''mtE''·''m<sub>X</sub>''<sup>-1</sup> [mtEU·kg<sup>-1</sup>], and the [[mitochondrial content]] per object ''X'' is ''mtE<sub><u>N</u>X</sub>'' = ''mtE''·''N<sub>X</sub>''<sup>-1</sup> [mtEU·x<sup>-1</sup>] ([[ | |description='''Density''' is frequently a quantity divided by volume: mass density or mass concentration is mass per volume, ''M''·''V''<sup>-1</sup> [kg·m<sup>-3</sup>]; radiant energy density is radiant energy per volume, ''Q''·''V''<sup>-1</sup> [J·m<sup>-3</sup>]; charge density is charge per volume, ''Q''·''V''<sup>-1</sup> [C·m<sup>-3</sup>]. However, [[electric current density]] is current divided by area, ''j''=''I''·''A''<sup>-1</sup> [C·m<sup>-2</sup>]. Number density of entities or number concentration is numbers per volume, ''C''<sub>B</sub> = ''N''<sub>B</sub>·''V''<sup>-1</sup> [x·m<sup>-3</sup>]. In contrast, the amount-of-substance [[concentration]], ''c''<sub>B</sub> = ''n''<sub>B</sub>·''V''<sup>-1</sup> [mol·m<sup>-3</sup>] is not called a ''substance density'' ([[Cohen 2008 IUPAC Green Book |IUPAC]]). Thus the [[sample mass concentration]] is ''C<sub><u>m</u>X</sub>'' = ''m<sub>X</sub>''·''V''<sup>-1</sup> [kg·m<sup>-3</sup>], the [[mitochondrial concentration]] is ''C<sub>mtE</sub>'' = ''mtE''·''V''<sup>-1</sup> [mtEU·m<sup>-3</sup>], whereas the specific [[mitochondrial density]] is ''D<sub>mtE</sub>'' = ''mtE''·''m<sub>X</sub>''<sup>-1</sup> [mtEU·kg<sup>-1</sup>], and the [[mitochondrial content]] per object ''X'' is ''mtE<sub><u>N</u>X</sub>'' = ''mtE''·''N<sub>X</sub>''<sup>-1</sup> [mtEU·x<sup>-1</sup>] ([[BEC 2020.1]]). | ||
|info=[[ | |info=[[BEC 2020.1]], [[Cohen 2008 IUPAC Green Book]] | ||
}} | }} | ||
{{MitoPedia concepts | {{MitoPedia concepts | ||
|mitopedia concept=Ergodynamics | |mitopedia concept=Ergodynamics | ||
}} | }} | ||
Revision as of 12:53, 23 May 2020
- high-resolution terminology - matching measurements at high-resolution
Density
Description
Density is frequently a quantity divided by volume: mass density or mass concentration is mass per volume, M·V-1 [kg·m-3]; radiant energy density is radiant energy per volume, Q·V-1 [J·m-3]; charge density is charge per volume, Q·V-1 [C·m-3]. However, electric current density is current divided by area, j=I·A-1 [C·m-2]. Number density of entities or number concentration is numbers per volume, CB = NB·V-1 [x·m-3]. In contrast, the amount-of-substance concentration, cB = nB·V-1 [mol·m-3] is not called a substance density (IUPAC). Thus the sample mass concentration is CmX = mX·V-1 [kg·m-3], the mitochondrial concentration is CmtE = mtE·V-1 [mtEU·m-3], whereas the specific mitochondrial density is DmtE = mtE·mX-1 [mtEU·kg-1], and the mitochondrial content per object X is mtENX = mtE·NX-1 [mtEU·x-1] (BEC 2020.1).
Abbreviation: ρ, C, D
Reference: BEC 2020.1, Cohen 2008 IUPAC Green Book
MitoPedia concepts:
Ergodynamics
