All articles starting with W
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Watchmen (TV series)
Watchmen is HBO's 2019 nine-episode limited series created by Damon Lindelof, a sequel-remix of Moore and Gibbons' comic set in alternate 2019 Tulsa with Regina King; it won 11 Emmys and a Peabody.
WatchOS
watchOS is the operating system Apple develops for the Apple Watch, first released in April 2015. It runs only on Apple Watch and requires a paired iPhone for setup.
Water
Water (H₂O) is a transparent, odorless liquid made of one oxygen atom bonded to two hydrogen atoms, the major constituent of Earth's oceans and of living organisms.
Water (2005 film)
Water (2005) is Deepa Mehta's Hindi-language drama, third in her elemental trilogy after Fire and Earth, about Hindu widows in 1938 Varanasi; its 2000 set was destroyed by protestors before completion in Sri Lanka, earning an Oscar nomination.
Water (classical element)
Water, in ancient philosophy, is one of the four classical elements of the Greek system and one of five elements in Chinese and Indian cosmologies.
Water (data page)
The Water data page collects internationally standardized reference values and formulations for the thermophysical properties of water (H₂O), including critical and triple points and the IAPWS-95 equation of state.
Water Act (Netherlands)
The Water Act (Waterwet) is a Dutch law of 29 January 2009 governing the management and use of water systems, which replaced eight earlier statutes and merged six permits into one.
Water activity
Water activity (aw) is the ratio of a substance's water vapor pressure to that of pure water, measuring free moisture. Key in food preservation and microbial limits: FDA threshold 0.85, C. botulinum minimum about 0.93.
Water aeration
Water aeration: transferring oxygen from air into water in aquaculture ponds, tanks, and wastewater treatment. Key devices include paddlewheel, propeller-aspirator, and diffused-air aerators; performance is measured by SOTR and SAE (kg O2/kWh).
Water Album
The Water Album (Shui tu 水圖), also called the Twelve Views of Water, is a set of twelve paintings of water alone by the Southern Song painter Ma Yuan.
Water and Power Development Authority (Pakistan)
The Water and Power Development Authority (WAPDA) is a Pakistani state-owned statutory body, established by act of parliament in 1958 and headquartered in Lahore, responsible for water resources and hydropower.
Water as proton donor in alkaline hydrogen oxidation
Water as proton donor in alkaline hydrogen oxidation is the role where water, not acid, supplies the proton, making alkaline hydrogen kinetics far slower than in acid.
Water baby (folklore)
Water baby (folklore): a dangerous small water spirit of Great Basin Native American tradition (Northern Paiute, Shoshone, Ute), a shaman's helper credited with rock art; distinct from Kingsley's 1863 literary Water-Babies.
Water balance
A water balance, also called a water budget, is an accounting of water entering, leaving, and stored within a system such as a watershed, based on conservation of mass.
Water bottle
Water bottle: a container for drinking water, either a single-use PET package or a durable reusable vessel in plastic, stainless steel, aluminum, or glass; distinguished by LCA showing reuse beats single-use after a payback period, and by FDA and EU packaging regulation.
Water buffalo
Water buffalo (Bubalus bubalis), also river buffalo or domestic water buffalo, is an Asian domestic bovid raised for milk, meat, and draught; two types (river 2n=50, swamp 2n=48) descend from Bubalus arnee, with milk fat about twice cow milk.
Water caltrop
Water caltrop (Trapa natans), also called water chestnut or singhara, is an annual floating-leaved aquatic plant with horned edible fruits, native to Eurasia and Africa, a protected crop in Asia and Europe but a noxious invasive weed in North America and Australia.
Water cannon
A water cannon is a device that directs a high-velocity jet of water at people, used by police to disperse crowds and control riots, typically truck-mounted.
Water Cherenkov neutrino observatories
A water Cherenkov neutrino observatory is a large tank of ultrapurified water instrumented with thousands of photomultiplier tubes, detecting solar, atmospheric, and supernova neutrinos via the Cherenkov light cone.
Water chlorination
Water chlorination is disinfection of drinking water with chlorine or chlorine compounds to kill pathogens, in use continuously since Jersey City pioneered it in 1908.
Water Classic (Shui Jing)
The Water Classic (水经) is an ancient Chinese geographic work describing the country's river systems; its authorship is disputed, with modern scholars favoring compilation during the Three Kingdoms period.
Water clock
A water clock, or clepsydra, measures time by the regulated flow of water into or out of a vessel. The Egyptians built the first ones in the 16th century BC.
Water conduction in bryophytes
Water conduction in bryophytes is the movement of water through mosses, liverworts, and hornworts without roots or xylem, mostly via external capillary films, with internal hydroid strands in a few mosses like Polytrichum.
Water conflict
Water conflict, also known as water wars, is dispute or violence between states or communities over shared freshwater, caused by scarcity, dams, pollution, or groundwater abstraction.
Water conservation
Water conservation, also called water preservation, is the practice of reducing water use or waste through efficiency, shorter or less frequent use, and demand management rather than new supply.
Water content
Water content, also known as moisture content, is the amount of water held in a soil, expressed gravimetrically by mass or volumetrically, and widely monitored in agriculture and hydrology.
Water cooling
Water cooling is the use of water as a heat-transfer medium to carry waste heat from equipment and industrial processes, especially power plants and data centers.
Water Corporation (Western Australia)
Water Corporation is the Western Australian Government-owned utility supplying water, wastewater, and drainage services across most of the state, established under the Water Corporation Act 1995.
Water cure (torture)
Water cure (torture): an interrogation torture forcing victims to drink large water quantities or suffocate under poured water; used by U.S. troops in the Philippine-American War 1899-1902 and ruled torture in U.S. courts; distinct from waterboarding and unrelated to hydropathy.
Water cycle
The water cycle, also called the hydrologic cycle, is the continuous movement of water among oceans, atmosphere, and land, driven by solar energy and gravity.