'About 14.5 pounds per square inch at sea level, it decreases with altitude & has to be increased in airplanes'
Air pressure
AIR: About 14.5 pounds per square inch at sea level, it decreases with altitude & has to be increased in airplanes
About 14.5 pounds per square inch at sea level, it decreases with altitude & has to be increased in airplanes
About 14.5 pounds per square inch at sea level, it decreases with altitude & has to be increased in airplanes
AIR
Air pressure
AIR