Altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and...

Altitude sickness, the mildest form being acute mountain sickness (AMS), is a harmful effect of high altitude, caused by rapid exposure to low amounts...

The effects of high altitude on humans are mostly the consequences of reduced partial pressure of oxygen in the atmosphere. The medical problems that are...

base of the altitude. The intersection of the extended base and the altitude is called the foot of the altitude. The length of the altitude, often simply...

Look up altitude in Wiktionary, the free dictionary. Altitude is the height of an object over a datum. It may also refer to: Altitude (astronomy), one...

Altitude training is the practice by some endurance athletes of training for several weeks at high altitude, preferably over 2,400 metres (8,000 ft) above...

A medium-altitude long-endurance unmanned aerial vehicle flies at an altitude window of 10,000 to 30,000 feet (3,000–9,000 m) for extended durations of...

High-altitude nuclear explosions are the result of nuclear weapons testing within the upper layers of the Earth's atmosphere and in outer space. Several...

High-altitude military parachuting, or military free fall (MFF), is a method of delivering military personnel, military equipment, and other military supplies...

High-altitude pulmonary edema (HAPE) is a life-threatening form of non-cardiogenic pulmonary edema that occurs in otherwise healthy people at altitudes typically...