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  2. Hydrometer - Wikipedia

    en.wikipedia.org/wiki/Hydrometer

    Schematic drawing of a hydrometer. The lower the density of the fluid, the deeper the weighted float B sinks. The depth is read off the scale A.. A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy.

  3. Check weigher - Wikipedia

    en.wikipedia.org/wiki/Check_weigher

    There are several tolerance methods: . The traditional "minimum weight" system where weights below a specified weight are rejected. Normally the minimum weight is the weight that is printed on the pack or a weight level that exceeds that to allow for weight losses after production such as evaporation of commodities that have a moisture content.

  4. Mercury-in-glass thermometer - Wikipedia

    en.wikipedia.org/wiki/Mercury-in-glass_thermometer

    A basic mercury thermometer is a precisely crafted piece of tube-shaped glass enveloping a mercury-filled reservoir connected to an extremely thin channel, called the capillary bore, that provides a chamber the mercury from the reservoir can expand into.

  5. Thermometer - Wikipedia

    en.wikipedia.org/wiki/Thermometer

    Mercury thermometer (mercury-in-glass thermometer) for measurement of room temperature. [1]A thermometer is a device that measures temperature (the hotness or coldness of an object) or temperature gradient (the rates of change of temperature in space).

  6. Heavy liquid - Wikipedia

    en.wikipedia.org/wiki/Heavy_liquid

    The classical heavy liquids like 1,1,2,2-tetrabromoethane (Muthmanns solution), potassium tetraiodomercurate(II) (Thoulets solution), bromoform or diiodomethane which are used in mineralogy are very toxic.

  7. Newtonian fluid - Wikipedia

    en.wikipedia.org/wiki/Newtonian_fluid

    While no real fluid fits the definition perfectly, many common liquids and gases, such as water and air, can be assumed to be Newtonian for practical calculations under ordinary conditions. However, non-Newtonian fluids are relatively common and include oobleck (which becomes stiffer when vigorously sheared) and non-drip paint (which becomes ...

  8. Nilometer - Wikipedia

    en.wikipedia.org/wiki/Nilometer

    Measuring shaft of the nilometer on Roda Island, Cairo. A nilometer is a structure for measuring the Nile River's clarity and water level during the annual flood season in Egypt. [1]

  9. Network traffic measurement - Wikipedia

    en.wikipedia.org/wiki/Network_traffic_measurement

    Network performance could be measured using either active or passive techniques. Active techniques (e.g. Iperf) are more intrusive but are arguably more accurate.Passive techniques have less network overhead and hence can run in the background to be used to trigger network management actions.