Quote:
Originally Posted by bojan
Back to analogies..
When thinking about counter-intuitive concepts of residual and/or "emerging" forces, aerodinamic lift comes to my mind.
I bet that 90% of public do not realise that the force that keeps the aircraft in the air is a result of difference of speeds of airflow below and above the wing.. resulting in difference of static pressures between upper and lower side.. and hence the lift.
This is another interesting read on gravity as emerging force:
http://en.wikipedia.org/wiki/Entropic_gravity
http://arstechnica.com/science/2011/...hermodynamics/ |
good example bojan,
The Bernoulli effect is counter intuitive. If you hang two ping pong balls from the ceiling with pieces of string, separated by a small gap and then blow air into the gap between the ping pong balls, one's intuition says that the balls should fly apart - ie the air should push the balls apart. And yet the Bernoulli effect causes the balls to comes close together and even touch.