Many different factors affect the density of air. Most measurably, as altitude increases, air becomes less dense, decreasing atmospheric pressure. Standard altitude-pressure tables allow ...

While you may never have any need or desire to know your current altitude or atmospheric pressure, aspiring meteorologists, ...

Barometric altimeters are most common, and measure altitude above sea level using atmospheric pressure. Modern commercial ...

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 passenger plane. Air pressure is due to the weight of air in the ...

the air pressure is only around 33,700 Pa approximately one third of the atmospheric pressure at sea level. Altitude sickness is a set of symptoms caused by rapidly ascending to areas high above ...

Inside the spacecraft, the atmosphere can be controlled so ... to keep body fluids in the liquid state. At this altitude the total air pressure is no longer sufficient to keep body fluids from ...