to the amount of atmospheric pressure exercised on the mercury of the instrument. We shall therefore be able to weigh the pressure of the atmosphere by attaching the tube of the barometer to the ...

Toriccelli also went on to develop the mercury barometer, an instrument used to measure atmospheric pressure. A barometer also monitors variations in atmospheric pressure. As air becomes thinner ...

The barometer measures and tracks these changes in the Earth’s atmosphere, therefore helping meteorologists forecast weather conditions in the short-term. The first mercury barometer was created ...