barometer

Term: barometer

Literally meaning: “ measure of weight”

Origin: Anc Greek

βαρύς/varys (=heavy)

μέτρον/metron (= measure)

Coined/History

The first barometer was invented by Talian mathemathecian and physicist Evangelista Toriricelli (1608-1647) in 1644 and was known as the “Torriceli tube”.  However some reports attribute its invention to Italian scientist Gasparo Berti in the early 1640s. Torriceli’s barometer contained mercury as it had been suggested by Torriceli’s friend Galileo Galilei (1564-1642). A water barometer was created later as there some written records around 1700. In 1843 Lucien Vidie invented the first fluidless barometer known today as “aneroid barometer”.

Definition

Barometer is a scientific instrument for measuring atmospheric pressure. A barometer is different from manometer as the later is using for measuring pressure of a gas in a container. Barometer is very useful  for weather prediction.