Meteorological instruments included barometers, pressure readings, thermometers, anemometers, actinometers, psychrometers, evaporimeters, and weather vanes.
In the mercury barometer, atmospheric pressure balances a column of mercury, the height of which can be precisely measured.
An alternative to the barometer for pressure measurement is an apparatus for measuring the boiling point of a liquid, because this temperature depends on the atmospheric pressure.
Occasionally a photographer comes along who is a kind of human barometer, registering pressure changes, ticking off fluctuations in the cultural weather.
The arrow indicating the period between 14 50 12 and 14 50 48 shows the time when the stress meter, barometer, water pressure meter, and STS seismometer recorded large amplitudes.
It measures a smaller subset of meteorological variables when compared to its moored counterpart, with a barometer measuring pressure in a tube on its top.
The concerns in the capital are seen as a barometer of pressures that will be felt across the health service.
A large storm surge raised the water level at Corpus Christi to its highest in years and completely inundated Padre Island, where barometers recorded pressures as low as 28.50 inHg on the southern half of the island.
For example, if we observe the three variables of pressure, barometer reading and the occurrence of storms, there is a strong correlation between the readings of the barometer and the probability of a storm occurring.
