Manual Q is your one-stop reference book on the low-pressure, low-velocity systems used in small and mid-size commercial buildings. Manual Q gives you time-saving quick fitting loss tables and a ...

For example, when fluid passes over a solid body, the streamlines get closer together, the flow velocity increases, and the pressure decreases. Airfoils are designed so that the flow over the top ...

For example, when a parachutist opens their parachute, the surface area increases. This produces a large amount of air resistance. The parachutist is able to reach a low terminal velocity.