What Is Pressure Difference -

High pressure.The air simply follows the gradient and rushes in to fill the gap. 2. Weather and Wind

This is why oil pipelines require pumping stations every few miles. The pressure difference created by the pumps must overcome the natural pressure drop along the pipeline. What Is Pressure Difference

Every time the wind blows, a balloon pops, a syringe draws blood, or an airplane lifts off the runway, you are witnessing the same fundamental physical principle: . High pressure