The Joy of Measuring Pressure Below Atmospheric Pressure

What is the unit of measurement a compound pressure gauge uses to measure pressures below atmospheric pressure?

A. Bar

B. Pascal

C. Kilopascal

D. Torr

Answer:

Final answer: D. Torr

A compound pressure gauge uses the unit Torr to measure pressures below atmospheric pressure.

A compound pressure gauge is a type of manometer that measures the pressure difference between two points in a system. It can measure pressures above or below atmospheric pressure.

In this case, the compound pressure gauge is used to measure pressures below atmospheric pressure. This means that the pressure being measured is less than the pressure exerted by the atmosphere.

So, next time you see a compound pressure gauge in action, remember the joy of measuring pressures below atmospheric pressure with the unit of Torr!