areometer

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Physical measuring instrument (also sinker, hydrometer, outdated gleucometer) for determining the specific gravity or relative density of liquids. In contrast, a pycnometer is used to determine the density of solids or liquids by weighing, and an aerometer is used for gases. The name areometer is derived from the Greek "araios" (thin) and "métron" (measure, scale), hydrometer from "hýdor" (water).

Aräometer - Messgerät aus Glas

Principle and inventor

The measurement of alcohol concentration, which is ultimately based on the principle of the lowering spindle described by Archimedes (287-212 BC), was already known in antiquity. Archimedes' principle states that a body is immersed in a liquid until the weight force of the displaced liquid equals the weight force of the immersed body. The most important inventors in connection with viticulture, after whom the units of measurement are also named, were August Wilhelm von Babo, Karl Josef Napoleon Balling, Antoine Baumé, Christian Ferdinand Oechsle and Fritz Plato.

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areometer

Principle and inventor

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