Atmospheric Pressure

No matter where and when you are, the gas always surrounds us. For a really long time, people just thought gas didn't have weight. But the truth is wrong. The gases actually have weight and press on our body all the time. More specifically, how much exactly the pressure are we people hold all the time?

Let us do a simple calculation. The formula of pressure(P): P=F(Force)/A(Contact Area)
Force is the gravity of all the gases and the area is the surface of a object that contact with gases.

Assume that the mass of air in rectangular below is 10000kg, so the Force=mass*gravitational force=

9.8*10⁴ N. And the contact area of this rectangular is 1 m².
Hence the Pressure=9.8*10⁴/1=9.8*10⁴ N/m²=98kPa

                                                                                                

image from url

So, our body sustain such a huge pressure all the time, but we just didn't realize it. Is that sounds inconceivable?

Searching for more information about atmospheric pressure?
Check out this website!
http://education.nationalgeographic.org/encyclopedia/atmospheric-pressure/