Definition:Pascal Second

Definition

The pascal second is the SI base unit of dynamic viscosity.

Conversion Factors

\(\ds \)

\(\)

\(\ds 1\)

Pascal Second

\(\ds \)

\(=\)

\(\ds 10\)

poise

Symbol

$\mathrm {Pa \cdot s}$

The symbol for the pascal second is $\mathrm {Pa \cdot s}$.

Its $\LaTeX$ code is \mathrm {Pa \cdot s} .

Base Units

The SI base units of the pascal second are:

$\mathrm {Pa \cdot s} := \mathrm {kg} \, \mathrm m^{-1} \, \mathrm s^{-1}$

where:

$\mathrm {kg}$ denotes kilograms

$\mathrm m$ denotes metres

$\mathrm s$ denotes seconds (of time).

Also known as

The pascal second is also known as the poiseuille.

This was proposed as a name for the SI base unit of measurement of dynamic viscosity, but it never caught on.

In older sources, it can also be seen expressed in the forms:

• Kilogram per metre per second: $\mathrm {kg / m \, s}$
• Newton second per square metre: $\mathrm {N \, s / m^2}$