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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 Portuguese Wikipedia (Portuguese: Wikipédia em português) is the Portuguese-language edition of Wikipedia (written Wikipédia, in Portuguese), the free encyclopedia. It was started on 11 May 2001. [2] Wikipedia is the nineteenth most accessed website in Brazil [3] and the tenth most accessed in Portugal. [4]
Another type of hydrometer is the electronic Oscillating Body hydrometer which determines the density of a small sample drawn into a glass tube mounted on an oscillating mechanism. The difference in frequency between the test sample and a reference sample of distilled water is a measure of the density of the sample, which is displayed digitally.
Wikimedia Portugal, officially Associação Wikimedia Portugal is a Portuguese non profit association, recognized by the Wikimedia Foundation as a Wikimedia chapter operating in Portugal. It was established in 21 September 2009, in Guimarães.
Energias de Portugal (EDP). Archived from the original on 2015-04-08 "Barragens" (in Portuguese). Sistema de Informação do Regadio "Hydroelectric Plants in Portugal". Power Plants Around the World. Archived from the original on 2014-07-16
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