User:Milton Beychok/Sandbox: Difference between revisions
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{{Image|Hydrometer.png|right|223px|Add image caption here.}} | |||
A '''hydrometer''' is an instrument used to measure the [[specific gravity]] (or ''relative density'') of [[liquid]]s; that is, the ratio of the [[Density (chemistry)|density]] of the liquid to the density of [[water]] with both at the same [[temperature]]. It is usually made of glass and consists of a small diameter cylindrical stem and a larger diameter section weighted with [[mercury]] or [[Lead|lead shot]] to make it float upright. |
Revision as of 13:05, 2 February 2010
A hydrometer is an instrument used to measure the specific gravity (or relative density) of liquids; that is, the ratio of the density of the liquid to the density of water with both at the same temperature. It is usually made of glass and consists of a small diameter cylindrical stem and a larger diameter section weighted with mercury or lead shot to make it float upright.