légnyomásnak

Légnyomásnak refers to air pressure, the force exerted by the weight of the atmosphere on the Earth's surface. This pressure is a fundamental concept in meteorology and physics. Atmospheric pressure varies with altitude; it is higher at sea level and decreases as elevation increases because there is less air above to exert pressure. Temperature also plays a role, as warmer air is less dense and exerts less pressure than cooler air.

The standard atmospheric pressure at sea level is approximately 1013.25 hectopascals (hPa) or 29.92 inches of mercury. Changes in air pressure are crucial indicators of weather patterns. Areas of high pressure are typically associated with fair and stable weather, while areas of low pressure often bring cloudy skies, precipitation, and storms. The movement of air masses from high-pressure to low-pressure areas creates winds.

Instruments used to measure air pressure include barometers. Understanding air pressure is vital for various applications, from aviation and weather forecasting to diving and the functioning of scientific instruments.