Wing
of a aircraft:
Probably
the best known and for the modern world most important
real-life-application of Bernoulli's principle is the wing of a
plane. Here the curve of the upper side of the wing forces the air on
the upper side to fit through a smaller area, so it has to speed up
and lower by this the pressure. Now the pressure difference between
the air above the wing and the air under the wing creates a force,
the lift.
Baseball:
One
example is Baseball. When the pitcher throws a curved ball, he spins
the ball.
In
this case the resistance of the spinning ball to the air is on the
left side(in flight direction) lower, then on the side, because on
the left side the ball moves with the air and on the right side
against the air, so the air on the left side is faster then the air
on the right side. Now Bernoulli said that if air is faster it has
lower pressure, so there is lower pressure left of ball causing him
to fly in a curve to the left. If the ball spins in other direction,
the curve moves into these other directions.
Sailing:
Sailing
also works with Bernoulli’s theory.
It
takes place, if the sailing-boat isn't sailing with the wind. Here
the sail is shaped like a wing and works like one. the airflow
directly in front of the sail has to speed up and gets so lower
pressure, what causes a force forwards.
Spoiler:
The
spoilers of racing cars then are nothing more than inverted wings. So
they create a downward force, which gives the car more adhesion, and
allows the car to drive faster through curves
and turns.
Frisbee:
The frisbee also works because it looks like a wing and creates lift by using Bernoulli's Principle.
Ping-pong
ball in hair-dryer-airstream
Also,
because of Bernoulli’s principle, a ping-pong ball
stays in the airstream of the hair dryer. Because
if it moves to one
side out of the airstream, the lower pressure of the moving air in
the airstream of the hair-dryer will hold the ping-pong ball in the
airstream.
Strong storm/tornado
In a strong storm or a tornado, the air speed outside of the house is a way higher then inside the house, where airspeed is nearly 0. So the air pressure inside the house is way higher the outside, what causes the roof tiles to be lifted and taken away.Atomizer
Another daily life example for Bernoulli's Principle is the atomizer. Here the air that moves through the upper pipe has lower pressure, then the air in the tank, so the air in the tank presses up the liquid, what then mixes up with the air and comes out.
