Wrench (Spanner): overview, types, history and uses Wrench A wrench (spanner) is a hand tool for gripping and turning fasteners and fittings. This article describes common types, parts, operation, history, safety tips and distinctions betw…
Write Anywhere File Layout (WAFL) — design, features, and uses Write Anywhere File Layout Write Anywhere File Layout (WAFL) is a disk-layout and snapshot-friendly filesystem design used in enterprise storage appliances, optimized for RAID arrays, quick recovery, and onl…
Wrought iron: composition, history, properties and uses Wrought iron Wrought iron is a low-carbon, slag-containing form of iron known for its fibrous texture, weldability and historical use in forging and ornament. This article covers its properties…
Xcelerator — launched steel coaster at Knott's Berry Farm Xcelerator Xcelerator is a launched steel roller coaster at Knott's Berry Farm, built by Intamin. It features a high-speed hydraulic launch, a signature top-hat element and a compact layout i…
Xiluodu Dam Major arch-gravity hydroelectric dam on the upper Yangtze (Jinsha) River in southwestern China, completed in the early 2010s and important for power, flood control, and river manag…
XSLT — Extensible Stylesheet Language Transformations XSLT XSLT is a declarative XML-based language for converting XML documents into other formats (XML, HTML, text). It uses templates, XPath and output methods to separate content from pre…
Zauro polder project: irrigation and floodplain development on the Rima River Zauro polder project A neutral overview of the Zauro polder project in Kebbi State, Nigeria: setting, technical features, aims for irrigation and dry-season farming, and environmental and social consid…
Zener diode A semiconductor diode engineered to operate in controlled reverse breakdown for voltage reference and regulation, named after Clarence Zener and widely used in power supplies, clam…
Zip line: aerial cable rides, crossings and recreational ziplines Zip line A zip line is an inclined cable or rope system that lets a person travel by gravity along a suspended pulley. Used for recreation, transport and canopy access, it has distinct part…
