Medically reviewed by Arno Kroner, DAOM Altitude sickness occurs when air pressure and oxygen levels are reduced at a higher elevation, as in the mountains. It's more likely to occur if you're ...

In addition, for reasons not entirely understood, high altitude and lower air pressure causes fluid to leak from the capillaries which can cause fluid build-up in both the lungs and the brain.

There are lots of great air pressure demonstrations around, but a leaky water bottle is one of the simplest. It looks impressive and costs almost nothing.

and so too does the pressure of air. Many different factors affect the density of air. Most measurably, as altitude increases, air becomes less dense, decreasing atmospheric pressure. Standard ...

Air molecules colliding with a surface cause atmospheric pressure. Atmospheric pressure at sea level is about 101,000 Pa (101 kPa) but just 27,000 Pa (27 kPa) at the cruising altitude of a ...

At this altitude the total air pressure is no longer sufficient to keep body fluids from boiling. - back to the top- Spacesuits for the space shuttle era are pressurized at 4.3 pounds per square ...