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  2. History of water filters - Wikipedia

    en.wikipedia.org/wiki/History_of_water_filters

    The history of water filters can be traced to the earliest civilisations with written records. Water filters have been used throughout history to improve the safety and aesthetics of water intended to be used for drinking or bathing. In modern times, they are also widely used in industry and commerce. The history of water filtration is closely ...

  3. Chinese water torture - Wikipedia

    en.wikipedia.org/wiki/Chinese_water_torture

    Chinese water torture or a "dripping machine" [1] is a mentally painful process which cold water is slowly dripped onto the scalp, forehead or face for a prolonged period of time. [1] The process causes fear and mental deterioration on the subject. The pattern of the drops is often irregular, and the cold sensation is jarring, which causes ...

  4. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation , accessible drinking water , public and private aquariums , and the safe use of ponds and swimming ...

  5. Drop (liquid) - Wikipedia

    en.wikipedia.org/wiki/Drop_(liquid)

    Drop (liquid) A drop or droplet is a small column of liquid, bounded completely or almost completely by free surfaces. A drop may form when liquid accumulates at the end of a tube or other surface boundary, producing a hanging drop called a pendant drop. Drops may also be formed by the condensation of a vapor or by atomization of a larger mass ...

  6. Waterdrop - Wikipedia

    en.wikipedia.org/wiki/Waterdrop

    Waterdrop or water drop may refer to: Drop (liquid) Tianjin Olympic Center Stadium in Tianjin, China, also known as the "Water Drop". Kelvin water dropper, a type of electrostatic generator. Water dropped from an aircraft as part of Aerial firefighting. "Waterdrop", a song by Leama & Moor from the 2006 album Common Ground.

  7. Water droplet erosion - Wikipedia

    en.wikipedia.org/wiki/Water_droplet_erosion

    Water droplet erosion. Water droplet erosion damage in a steam turbine blade. Water droplet erosion (WDE) is "a form of materials wear that is caused by the impact of liquid droplets with sufficiently high speed." [1] The phenomenon was furthermore previously known as liquid impingement erosion (LIE).

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