Jacob ( 1654-1705), John (1667-1748), James Bernoulli  (1654-1705)  and  Daniel (1700-
1782),  were  all  members  of  the same distinguished family of mathematicians and physics.

Bernoulliís Principle: Fluids in an area moving faster than the surrounding area possess less
pressure. Faster moving fluids equal less pressure.   (Plate1A)

Fluids include liquids and gases.  Air is a gas  and  is classified as  a fluid. A relationship that 
expresses the conservation of momentum in fluid flow. The usual  form applies to the steady 
in  viscid  flow of an incompressible fluid and can be obtained  by  integrating the Navier-
Stokes equation.
Navier-Stokes equation.