What is one atmosphere of pressure?

1 Answer
Apr 18, 2017

One atm. is the same (per definition) as 101325 pa. This approximately the same as #10^5# pa which is 1 bar.


The standard atmosphere is defined as 101325 pa. As you can see, this is pretty close to #10^5# pa which is equal to 1 bar.

Keep in mind that pressure is defined as the force exerted on a certain area. Therefore the SI unit of pressure # pa# is the same as #N*m^(-2)#.