Definition:SI/Pressure

Definition

Various SI units of pressure which have specific names are as follows:

The pascal is the SI unit of pressure.

It is defined as being:

The amount of pressure required to apply a force of $1$ newton over an area of $1$ square metre

$\ds $

$\ds 1$

pascals

$\ds $

$=$

$\ds 1$

newton per square metre

$\ds $

$=$

$\ds 10$

barye

$\ds $

$=$

$\ds 10^{-6}$

megapascal

$\ds $

$\approx$

$\ds 1 \cdotp 450377 \times 10^{-4}$

pounds per square inch

The megapascal is an SI unit of pressure.

$\ds $

$\ds 1$

megapascal

$\ds $

$=$

$\ds 10$

bars

$\ds $

$=$

$\ds 10^6$

pascals

$\ds $

$\approx$

$\ds 1 \cdotp 450377 \times 10^2$

pounds per square inch