Density

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, C_B = N_B·V^-1 [x·m^-3]. In contrast, the amount-of-substance concentration, c_B = n_B·V^-1 [mol·m^-3] is not called a substance density (IUPAC). Thus the sample mass concentration is C_mX = m_X·V^-1 [kg·m^-3], the mitochondrial concentration is C_mtE = mtE·V^-1 [mtEU·m^-3], whereas the specific mitochondrial density is D_mtE = mtE·m_X^-1 [mtEU·kg^-1], and the mitochondrial content per object X is mtE_NX = mtE·N_X^-1 [mtEU·x^-1] (Gnaiger 2019 MitoFit Preprint Arch).

Abbreviation: ρ, C, D

Reference: Gnaiger 2019 MitoFit Preprint Arch, Cohen 2008 IUPAC Green Book

MitoPedia concepts: Ergodynamics