The movement and space between particles in a fluid affects the amount of pressure the fluid exerts. This means that the pressure in a fluid changes depending on its height, depth and temperature.

Can you feel a storm coming a mile away? Have you ever felt like you're a human barometer who can sense changes in barometric pressure? You're not imagining it and you're not alone. It is possible ...

Pioneering scientists discovered atmospheric pressure (also known as barometric or air pressure) in the 17th century, and determined a startling new fact—that air actually has weight.