5 Flashcards
1
Q
What is Mercury barometer ?
A
Employs air pressure to support a column of mercury in a tube
2
Q
What is a aneroid barometer
A
More portable less precise
Has a chamber with a partial back you which changes in air pressure collapse and expand the chamber it moves pointer on the scale calibrated equivalent to Mm or In of mercury
3
Q
What is a barometer?
A
Instruments used to measure air pressure and monitor changes
