All articles starting with S
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Speeds and feeds
Speeds and feeds are the two principal cutting variables set when programming a machining operation such as milling or turning, directly affecting cutting time, tool life, and surface finish.
Speedster (fiction)
Speedster (fiction): characters whose defining trait is super speed, from DC's Flash (Jay Garrick, 1940) to Marvel's Quicksilver; marked by secondary powers, the Speed Force, and physical limits.
Speedtest.net
Speedtest.net, also known as Speedtest by Ookla, is a web service launched in 2006 that measures Internet download speed, upload speed, and ping against servers worldwide.
Speedway Grand Prix of Poland
Speedway Grand Prix of Poland (Grand Prix Polski na żużlu): Polish rounds of the FIM Speedway Grand Prix world championship. Three rounds per season at venues such as Warsaw's PGE Narodowy, Wrocław, Łódź, Gorzów, and Toruń, including the Toruń finale.
Speedway Grand Prix of Sweden
Speedway Grand Prix of Sweden, the Swedish round of the FIM Speedway Grand Prix world championship, held at Skrotfrag Arena, Målilla since 2005 (missed 2013 and 2020); winners include Jason Crump (5 wins), Brady Kurtz, and Anders Thomsen (2026).
Speedway Grand Prix qualification
Speedway Grand Prix qualification is how riders earn places in the FIM Speedway Grand Prix, the world championship of speedway motorcycle racing, through championship standings, the SGP Challenge, and wild cards.
Speedway in Poland
Speedway in Poland is motorcycle racing on oval dirt tracks, first held in the early 1930s, whose Ekstraliga is the most popular speedway league in the world.
Speedway in the United Kingdom
Speedway in the United Kingdom is British league motorcycle speedway, controlled by British Speedway Promoters Ltd since its 1928 start at High Beech, now declining with five Premiership teams.
Speedway World Championship
The FIM Speedway World Championship is speedway motorcycle racing's world title, a one-day final from 1936 to 1994 and the Speedway Grand Prix series since 1995; record six titles shared by Mauger, Rickardsson, and Zmarzlik, with Robert Lambert the 2026 champion.
Speedway World Cup
FIM Speedway World Cup (SWC), speedway's world team championship, successor to the 1960 World Team Cup, launched 2001, won most by Poland (9 titles), replaced by Speedway of Nations 2018–2022, Australia won 2026 in Warsaw.
Speedway World Under-21 Championship
The Speedway World Under-21 Championship, also known as the FIM Speedway Under-21 World Championship, is the FIM world championship for speedway riders under 21, first held in 1977.
Speedwell (1577 ship)
Speedwell (1577 ship), possibly the former Swiftsure, was a 60-ton English vessel bought in Holland for the Pilgrims; after two leaking abortive crossings in 1620 she was abandoned at Plymouth and the Mayflower sailed alone.
Speedy (1928 film)
Speedy (1928) is Harold Lloyd's final silent feature, a Ted Wilde comedy in which the scatterbrained New Yorker Speedy Swift saves the city's last horse-drawn streetcar, with a Babe Ruth cameo and extensive New York location shooting.
Speedy (Mia Dearden)
Speedy (Mia Dearden) is DC Comics' second Speedy, Green Arrow's sidekick, created by Kevin Smith and Phil Hester, debuting in Green Arrow Vol. 3 #2 (2001) and distinguished as DC's first major HIV-positive hero.
Speedy E
Speedy E (SPDYE5, speedy protein E5) is a human chromosome 7q11.23 protein-coding gene of the Speedy/RINGO Cdk-activator family, predicted to bind protein kinases and positively regulate Cdk activity, expressed broadly with highest levels in testis.
Speedy Gonzales
Speedy Gonzales is a Warner Bros. animated cartoon mouse from the Looney Tunes series, known globally for being billed as "the fastest mouse in all of Mexico."
Speedy Scandal (과속스캔들)
Speedy Scandal (과속스캔들, Scandal Makers) is a 2008 South Korean family comedy, Kang Hyeong-cheol's directorial debut, starring Cha Tae-hyun, Park Bo-young, and Wang Seok-hyeon; it drew 8,245,523 admissions, topping the 2008 Korean box office.
Speicherstadt
The Speicherstadt, Hamburg's historic warehouse district, was built between 1885 and 1927 on islands in the Elbe River and became a UNESCO World Heritage Site in 2015.
Speicherstadt and Kontorhaus District with Chilehaus
Speicherstadt and Kontorhaus District with Chilehaus is a UNESCO World Heritage Site in Hamburg, Germany, comprising a historic warehouse district and an early modernist office quarter.
Spektr-R
Spektr-R, also known as RadioAstron (Спектр-Р), was a Russian orbital observatory carrying a 10-meter radio telescope that operated from 2011 to 2019, pairing with ground telescopes for interferometry.
Spektr-RG
Spektr-RG (Спектр-РГ), also written Spectrum-Roentgen-Gamma or SRG, is a Russian-German X-ray observatory launched in 2019 that carries the eROSITA and ART-XC telescopes and surveys the sky from the Sun-Earth L2 point.
Spektrum RC
Spektrum RC is a Horizon Hobby brand of 2.4GHz radio equipment for model aircraft, helicopters, and surface vehicles, which introduced DSM spread-spectrum technology in 2004.
SPEL (robot language)
SPEL, formally SPEL+, is the proprietary structured programming language Seiko Epson supplies for its industrial SCARA and 6-axis robots, executed through the Epson RC+ development environment.
Speleogenesis
Speleogenesis is the origin and development of caves by dissolution of soluble rock. Two modes: epigenic (surface carbonic acid, e.g., Mammoth Cave) and hypogenic (deep fluids, e.g., sulfuric acid caves like Carlsbad Cavern and Lechuguilla).
Speleology
Speleology is the scientific study of caves, covering their formation, geology, hydrology, biology, and the exploration techniques, with roots dating to late 19th-century cave surveying.
Speleomantes
Speleomantes (European cave salamanders), genus Dubois 1984, eight lungless plethodontid species: three in mainland Italy/France, five endemic to Sardinia; sister to Californian Hydromantes, diverged late Oligocene; Atylodes is a synonym.
Speleothem
Speleothem: secondary mineral deposits formed in caves, chiefly calcite stalactites, stalagmites, flowstone, and columns. Distinguished by morphology rather than composition; key climate archives dated by U-Th and U-Pb methods.
Speleothems as paleoclimate archives
Speleothems, cave formations such as stalagmites, preserve dated records of past rainfall, temperature, and vegetation, and are among the most precisely dated terrestrial climate archives available.
Speleotherapy
Speleotherapy is the therapeutic use of the microclimate of caves and mines for chronic airway diseases such as asthma, widely practiced in Central and Eastern Europe.
Spell checker
A spell checker is software that identifies misspelled words and suggests corrections, found in word processors, browsers, and search engines since Ralph Gorin's 1971 SPELL program.