Question

What is atmospheric pressure?What is its value?As we know that atmospheric pressure is high why we people are not crushed under such a high pressure?

Answer 1

1). Atmospheric pressure is the pressure caused by the weight of the atmosphere.  Atmospheric pressure is measured with an instrument called a "barometer", that's why atmospheric pressure is also known as barometric pressure.

2). Atmospheric pressure has a value of 14.6959 pounds (101,325 pascals) per square inch.

3). The air pressure in our lungs, ears and stomachs is the same as the air pressure outside of our bodies. that's why people not crushed under such a high pressure.

Answer 2

the pressure exerted by the atmosphere at any point on the earth is called atmospheric pressure at that point. 101325 pa . because the atmosphere also pressurize the body. Diving down 100 meters will pressurize the gasses in the body and they will compress, like the air in our lungs and if the lung volume get below half a litre the lungs can get partly filled with blood plasma. But sorry no bone crushing. But if you take a big breath and hold it while you ascend from 100 meters to the surface, your ribs may start to break.