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The hydrometer sinks deeper in low-density liquids such as kerosene, gasoline, and alcohol, and less deep in high-density liquids such as brine, milk, and acids. It is usual for hydrometers to be used with dense liquids to have the mark 1.000 (for water) near the top of the stem, and those for use with lighter liquids to have 1.000 near the bottom.
Hydrometry is the monitoring of the components of the hydrological cycle including rainfall, groundwater characteristics, as well as water quality and flow characteristics of surface waters. [1]
The Fahrenheit hydrometer is a device used to measure the density of a liquid. It was invented by Daniel Gabriel Fahrenheit (1686–1736), better known for his work in thermometry . The Nicholson hydrometer , after William Nicholson (1753-1815), is similar in design, but instead of a weighted bulb at the bottom there is a small container ...
The Baumé scale is a pair of hydrometer scales developed by French pharmacist Antoine Baumé in 1768 to measure density of various liquids. The unit of the Baumé scale has been notated variously as degrees Baumé, B°, Bé° and simply Baumé (the accent is not always present). One scale measures the density of liquids heavier than water and ...
It is the largest Wikipedia written in any Slavic language, surpassing the Polish Wikipedia by 20% in terms of the number of articles and fivefold by the parameter of depth. [4] In addition, the Russian Wikipedia is the largest Wikipedia written in Cyrillic [5] or in a script other than the Latin script. In April 2016, the project had 3,377 ...
It was founded in 1921 as the Meteorological Service of the Russian Soviet Federative Socialist Republic.In 1929 it joined the Hydrometeorological Centre of the USSR.In accordance with Government Decree on the establishment of a single hydrometeorological service of January 1, 1930 was organized by the Central Weather Bureau, converted in 1936 into the Central Weather Institute (since 1943 ...
The only reference to modern history claims (without giving a reference) that the hydrometer appears in the works of Jacques Alexandre César Charles, who was born in 1746, but a London instrument maker, John Clarke, was marketing hydrometers in 1725, when they were in use by the Excise authorities to measure the strengths of spirits, and there ...
All of these men returned valuable observations with the hydrometer, though Captain Rodgers afforded the most extended series. Those navigators who used the hydrometer enlarged the bounds of knowledge and fields of research and led to the discovery of new relations of the sea.