# Atmospheric Pressure + Added Pressure

If someone is at sea level and they put ten pounds of air pressure into a container does the container now have 10 + 14.5 = 24.5 pounds of air pressure. Do we not add the atmospheric pressure? Seems like the container had 14.5 in before the ten was added. I have a feeling there is a simple something I am over looking here. How much air pressure is in the container.

• Are you familiar with the difference between gauge pressure and absolute pressure? – tpg2114 Oct 16 '17 at 0:12
• No I am not. Apparently, the answer is in semantics then. I thought it would be a simple answer. So now I know. – Lambda Oct 16 '17 at 0:19
• If you have a totally flat car tire, and the auto mechanic asks you what the current air pressure in the tire is, do you tell him that it is 14.7 psi? – Samuel Weir Oct 16 '17 at 0:29
• My conversation with the mechanic would be different than one with a physicist. Hopefully, the physicist would think a little deeper. – Lambda Oct 16 '17 at 0:39
• – Alfred Centauri Oct 16 '17 at 1:09