aneroid barometer

Term: aneroid barometer

Literally meaning: “meausure of weight”

Origin: Anc Greek

βαρύς/varys (=heavy)

μέτρον/metron (=meausure)

Coined/History

The first barometer was invented in 1644, by Talian mathematician and physicist Evangelista Toriricelli (1608-1647) 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 fluid-less barometer known today as “aneroid barometer”.

Definition

Anaeroid barometer is a scientific instrument for measuring variations on atmospheric pressure by change in the shape of an evacuated metal cell made usually by phosphor bronze or beryllium copper.