User:Milton Beychok/Sandbox: Difference between revisions
Jump to navigation
Jump to search
imported>Milton Beychok No edit summary |
imported>Milton Beychok No edit summary |
||
| Line 2: | Line 2: | ||
A '''hydrometer''' is an instrument used to measure the [[specific gravity]] (or ''relative density'') of [[Liquid/Definition|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. | A '''hydrometer''' is an instrument used to measure the [[specific gravity]] (or ''relative density'') of [[Liquid/Definition|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. | ||
The stem contains a rolled paper marked with the scale being used. There are a great many different hydrometer scales commonly used to measure liquid densities in: [[petroleum crude oil]] marketing and refining; making [[wine]], brewing [[beer]] and making [[whiskey]]; producing [[sulfuric acid]] and other industrial [[chemical]]s; and refining [[sugar]]. | |||
Revision as of 13:35, 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.
The stem contains a rolled paper marked with the scale being used. There are a great many different hydrometer scales commonly used to measure liquid densities in: petroleum crude oil marketing and refining; making wine, brewing beer and making whiskey; producing sulfuric acid and other industrial chemicals; and refining sugar.