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  2. Space toilet - Wikipedia

    en.wikipedia.org/wiki/Space_toilet

    Space toilet. A space toilet or zero-gravity toilet is a toilet that can be used in a weightless environment. In the absence of weight, the collection and retention of liquid and solid waste is directed by use of airflow. Since the air used to direct the waste is returned to the cabin, it is filtered beforehand to control odor and cleanse bacteria.

  3. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A drain-waste-vent system (or DWV) is the combination of pipes and plumbing fittings that captures sewage and greywater within a structure and routes it toward a water treatment system. It includes venting to the exterior environment to prevent a vacuum from forming and impeding fixtures such as sinks, showers, and toilets from draining freely ...

  4. M1 Abrams - Wikipedia

    en.wikipedia.org/wiki/M1_Abrams

    M1 Abrams. The M1 Abrams (/ ˈeɪbrəmz /) [10] is a third-generation American main battle tank designed by Chrysler Defense (now General Dynamics Land Systems) and named for General Creighton Abrams. Conceived for modern armored ground warfare, it is one of the heaviest tanks in service at nearly 73.6 short tons (66.8 metric tons).

  5. Cistern - Wikipedia

    en.wikipedia.org/wiki/Cistern

    A cistern (from Middle English cisterne; from Latin cisterna, from cista 'box'; from Ancient Greek κίστη (kístē) 'basket' [ 1 ]) is a waterproof receptacle for holding liquids, usually water. Cisterns are often built to catch and store rainwater. [ 2 ] To prevent leakage, the interior of the cistern is often lined with hydraulic plaster.

  6. Merkava - Wikipedia

    en.wikipedia.org/wiki/Merkava

    64 km/h (40 mph) on road. 55 km/h (34 mph) off road. The Merkava (Hebrew: מֶרְכָּבָה, [mɛʁkaˈva] ⓘ, " chariot ") [ 5 ] is a series of main battle tanks (MBT) used by the Israel Defense Forces (IDF) and the backbone of the IDF's Armored Corps. Current iterations of this tank are considered broadly equivalent to the capabilities of ...

  7. Bathroom - Wikipedia

    en.wikipedia.org/wiki/Bathroom

    Bathroom. A bathroom is a room in which people wash their bodies or parts thereof. It can contain one or more of the following plumbing fixtures: a shower, a bathtub, a bidet, and a sink (also known as a wash basin in the UK). The inclusion of a toilet is common. There are also specific toilet rooms, only containing a toilet (most often ...

  8. Stepwell - Wikipedia

    en.wikipedia.org/wiki/Stepwell

    The Rani ki Vav, Patan, Gujarat. A multi-storey stepwell in Mahimapur Village, Amravati District, Maharashtra. Stepwells (also known as vavs or baori) are wells, cisterns or ponds with a long corridor of steps that descend to the water level. Stepwells played a significant role in defining subterranean architecture in western India from the 7th ...

  9. Activated sludge - Wikipedia

    en.wikipedia.org/wiki/Activated_sludge

    Activated sludge tank at Beckton sewage treatment plant, UK.The white bubbles are due to the diffused air aeration system. The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa.