Pascal’s Law states that when pressure is applied to a confined fluid, the pressure change is transmitted equally throughout the entire fluid.

While there isn't one single official " Fluid Mechanics For Dummies

A: Because we can’t “see” pressure fields and velocity profiles. We’re good at solid objects (a ball rolls, a brick sits still), but fluids are invisible actors. The solution? Draw pictures. Lots of pictures.

Highly compressible. They expand to fill any container completely.

When you put your thumb over the end of a garden hose, the water shoots out faster. Why? The same flow rate must exit a smaller hole – so speed increases. That’s the (matter is neither created nor destroyed).

When you sip a soda, you aren’t “sucking” the liquid up. You are reducing the pressure inside the straw. Atmospheric pressure (14.7 psi at sea level) then pushes the soda up into your mouth. Fluids move from high pressure to low pressure.

In the simplest terms:

When a fluid flows, it generally does so in one of two ways:

When a fluid flows through a pipe, friction between the fluid molecules and the rough pipe wall causes an energy drop known as . Longer pipes cause more head loss. Narrower pipes cause more head loss.