manometer

Term: manometer

Literally meaning: “ measure of rarity”

Origin: Anc Greek

μανός/manos(=thin, rare, sparce)

μέτρον/metron (=meausure)

Coined/History

In November 0f 1704 the French Mathematician Pierre Varignon (1654-1722), described a new instrument for measuring the air pressure which named “manometer”  because it was capable to measure scarcity of a gas: “……et l’appelle manomètre, c’est-à-dire mesure de la raréfaction”. .  Later this instrument was used to measure liquids.

Definition

 A manometer is a device to measure pressure in a fluid  or a gas. Kinds of manometers are sphygnomanometer and areaneroid manometer.