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## Summary:

- Difference between Absolute and Gauge Pressure.

## Main Question or Discussion Point

Hello all

I was wondering someone could help clear up my understanding about the difference between Absolute and Gauge Pressure.

After some reading i have been told that the Absolute Pressure is pressure taken at 0 relative to a vacuum.

I am trying to understand what this actually means.

Below is a sketch i made where i have a tank of water for which i calculated the pressure at the bottom of the tank, this tank is in a Vaccum.

I calculated the same pressure on Earth with the same formula but added the Atmospheric pressure.

But i still dont get it???

Can someone help?

Thank you.

I was wondering someone could help clear up my understanding about the difference between Absolute and Gauge Pressure.

After some reading i have been told that the Absolute Pressure is pressure taken at 0 relative to a vacuum.

I am trying to understand what this actually means.

Below is a sketch i made where i have a tank of water for which i calculated the pressure at the bottom of the tank, this tank is in a Vaccum.

I calculated the same pressure on Earth with the same formula but added the Atmospheric pressure.

But i still dont get it???

Can someone help?

Thank you.