比重计

Also known as areometer

thumb|upright=0.65|Schematic drawing of a hydrometer. The lower the density of the fluid, the deeper the weighted float B sinks. The depth is read off the scale A.

AI overview

A hydrometer is a simple instrument that measures the density of liquids by using a weighted float that sinks deeper or rises higher depending on how dense the fluid is. It matters because it allows people to quickly determine a liquid's density by reading a scale, which is useful in applications like brewing, winemaking, and other processes where liquid density indicates important properties.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Image: Saccharometer.jpg

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described by source: Brockhaus and Efron Encyclopedic Dictionary
Commons category: Hydrometers
measures: relative density
item operated: liquid
manifestation of: Archimedes' principle

Sources (1)

wikidata.org

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Article · 中文

比重计是用来测量液体的比重的装置。比重计通常用玻璃制作，上部是细长的玻璃管，玻璃管上标有刻度，下部较粗，里面放了汞或铅等重物，使它能够竖直地漂浮在水面上。测量时，将待测液体倒入一个较高的容器，再将比重计放入液体中。比重计下沉到一定高度后呈漂浮状态。在此时的液面的位置在玻璃管上所对应的刻度就是该液体的比重。

Abstract from DBpedia / Wikipedia · CC BY-SA