If one wishes to move a desired object power is always required to overcome the resistance to movement.
Also, air needs to be forcibly pushed or pulled, in order to move from one point to another. Also, it requires a force to move air through pipes or channels.
Also, air needs to be forcibly pushed or pulled, in order to move from one point to another. Also, it requires a force to move air through pipes or channels.
The flow resistance is the viscosity (tackiness) of the air and the friction of the air molecules with each other.
The force to push or pull the air is called pressure.
The Units for printing are:
The Units for printing are:
- Pascal (Pa)
If (0.1 kp) a force acting on a square of N, produces a pressure of 1 Pascal.
Ie 1 N/m 2 1 Pascal is a Newton so by square meter.
Since this unit describes rather lower pressures, are also
1 kPa (kilopascals) = 1000 Pa or
1 MPa (1 million pascals) used.
- No longer legally allowed, but still widespread, the units are
Bar or millibar.
100,000 Pascals (Pa), equal to 1 bar (bar)
100 Pascal (Pa), equal to 1 millibar (mbar).
