Fluidity

Physical size
Surname	Fluidity
Formula symbol	${\displaystyle \phi }$
Size and unit system unit dimension SI m · s · kg -1 = m 2 · N -1 · s -1 L · T · M −1

The fluidity is a measure of the flowability of liquids and gases ( fluids ). It is the reciprocal of the dynamic viscosity : ${\displaystyle \phi }$ ${\displaystyle \eta }$

${\displaystyle \phi ={\frac {1}{\eta }}}$.

The greater the fluidity, the thinner (more flowable) the fluid; the lower the fluidity, the thicker (less flowable) the fluid.

The SI unit of fluidity is:

${\displaystyle [\phi ]=\mathrm {\frac {m^{2}}{N\cdot s}} }$

An outdated measure of fluidity is the rhe .

Individual evidence

1. ↑ fluidity. In: Lexicon of Biology. Spektrum.de, accessed on November 16, 2017 .