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 or atmospheres, it affects weather, altitude changes, and even daily human activities.

Formula and Calculation

The standard formula is P = ρgh, where P is pressure, ρ is air density, g is gravity, and h is height. At sea level, it averages 1013.25 hPa.

Real-World Examples

Weather systems use high/low pressure zones. Altitude changes impact cooking (e.g., boiling water faster on mountains). Scuba divers monitor pressure to avoid decompression sickness.

FAQs

How is atmospheric pressure measured?
Barometers are the primary tools, with mercury and aneroid types being common.

Why does pressure decrease with altitude?
Air density reduces higher up, lessening the weight and force exerted.

Explore More

For a detailed atmospheric pressure definition, visit our resource page. Understand how sensors and tools leverage this principle in technology.

Ready to apply this knowledge? Check out our guides on pressure measurement devices for practical insights!