Measuring Pressure with a mercury barometer







Measuring
Pressure


Pressure is usually measured with a barometer
("bar" o "meter" - an instrument that measures "bars")

recall the different units of
pressure:


1 bar = 1000 mb

at sea level, 1013.25 mb = 29.92 inches of
Hg = 76 cm

1 hPa = 1 mb

OK, let's discuss the different types of
barometers....


mercury
barometer
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