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  2. Hydrometer - Wikipedia

    en.wikipedia.org/wiki/Hydrometer

    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.

  3. Fahrenheit hydrometer - Wikipedia

    en.wikipedia.org/wiki/Fahrenheit_hydrometer

    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 ...

  4. Hydrometry - Wikipedia

    en.wikipedia.org/wiki/Hydrometry

    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]

  5. Twaddell scale - Wikipedia

    en.wikipedia.org/wiki/Twaddell_scale

    The Twaddell scale is a hydrometer scale used for measuring the specific gravity of liquids relative to water. On this scale, a specific gravity of 1.000 is reported as 0, and a specific gravity of 2.000 is reported as 200. [1]

  6. List of measuring instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_measuring_instruments

    The substance potential of a redox reaction is usually determined electrochemically current-free using reversible ... hydrometer: specific gravity of liquids (density ...

  7. Talk:Hydrometer - Wikipedia

    en.wikipedia.org/wiki/Talk:Hydrometer

    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.

  8. List of weather instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_weather_instruments

    Weather stations typically have these following instruments: . Thermometer for measuring air and sea surface temperature; Barometer for measuring atmospheric pressure; Hygrometer for measuring humidity

  9. Antoine Baumé - Wikipedia

    en.wikipedia.org/wiki/Antoine_Baumé

    He devised many improvements in technical processes, e.g. for bleaching silk, dyeing, gilding, purifying saltpetre, etc., but he is best known as the inventor of the Baumé scale hydrometer or "spindle" which provides scientific measurements for the density of liquids. The scale remains associated with his name but is often improperly spelt ...

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