Pressure Measurement

Question 1

Define gauge pressure

Answer 1

The pressure measured relative to the ambient atmospheric pressure

Question 2

Define absolute pressure

Answer 2

Is the total pressure at a point in a fluid, the sum of atmospheric pressure and gauge pressure.

Question 3

What is a barometer

Answer 3

an instrument that measures atmospheric pressure. The barometer is filled with mercury, changes in atmospheric pressure cause the mercury in the tube to rise or fall.