What is Atmospheric Pressure?
Atmospheric pressure is the force exerted by the weight of air in the Earth’s atmosphere. Measured in units like Pascals (Pa) or atmospheres (atm), it affects weather patterns, human health, and engineering applications.
Atmospheric Pressure Formula
The standard formula to calculate atmospheric pressure is P = ρgh, where P is pressure, ρ is air density, g is gravity, and h is height. At sea level, it averages 101,325 Pa.
Real-World Examples
Weather forecasting relies on pressure changes; low pressure often indicates storms. Altitude sickness occurs due to lower pressure at high elevations. Scuba diving equipment must compensate for increasing underwater pressure.
FAQ Section
How is atmospheric pressure measured?
It is commonly measured using a barometer, with mercury or aneroid types being most prevalent.
Why does pressure decrease with altitude?
As altitude increases, air density and the weight of the air column above diminish, reducing pressure.
For a deeper atmospheric pressure definition, explore specialized resources to enhance your understanding.
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