519,064 articles
Arc consistency
Arc consistency is a local consistency property of constraint satisfaction problems: each value in one variable's domain must have support in the other, formalized by Alan Mackworth in 1977.
Arc converter
The arc converter, also called the Poulsen arc or arc transmitter, converts direct-current power into continuous radio waves; invented by Valdemar Poulsen in 1902, it dominated radio telegraphy until the 1920s.
Arc de Campanus
Arc de Campanus, Roman monumental arch at Aix-les-Bains, Savoie, built late 1st century AD by Lucius Pompeius Campanus for his family; 9.15 m tall, 75 cm thick, classified 1890, function debated.
Arc de Diane
Arc de Diane, Cahors (Lot, France): surviving arcade of the Roman public baths of Divona Cadurcorum, not a triumphal arch or temple of Diana; opus mixtum, late 1st-2nd century, classified 1886, excavated 1953-1956 by Labrousse.
Arc de Triomphe
The Arc de Triomphe is a monumental triumphal arch in Paris at the top of the Champs-Élysées, commissioned by Napoleon in 1806 and inaugurated in 1836.
Arc de Triomphe du Carrousel
Arc de Triomphe du Carrousel: Paris triumphal arch (1806–1808) by Percier and Fontaine for Napoleon's 1805 victories, on the Arch of Septimius Severus model, crowned by Bosio's quadriga, restored 2022–2024.
Arc Dome
Arc Dome, also called Toiyabe Dome, is the highest summit of the Toiyabe Range in Nye County, Nevada, rising to 11,774 feet with a 5,214-foot prominence.
Arc fault detection
Arc fault detection identifies hazardous electric arcs in wiring by analyzing current or voltage signatures, enabling devices such as AFCIs to interrupt circuits before an arc ignites a fire.
Arc flash
An arc flash is the sudden release of electrical energy through the air when a high-voltage gap breaks down between conductors, reaching temperatures near 35,000 °F.
Arc Institute
Arc Institute, a nonprofit biomedical research organization in Palo Alto founded in 2021 by Patrick Collison, Silvana Konermann, and Patrick Hsu with over $650 million, funds eight-year no-strings-attached investigator labs and builds AI models such as Evo 2 and STATE.
Arc lamp
An arc lamp, also called an electric arc lamp, is a light source that produces illumination from an electric arc between two electrodes, lighting streets from the 1840s onward.
Arc length
Arc length, also known as curve length, is the length of a curve, computed for smooth curves by an integral and applied in machining, computer graphics, and GIS.
Arc Logistics Partners LP
Arc Logistics Partners LP was a fee-based Delaware limited partnership formed in 2013 by Lightfoot Capital to own and operate petroleum terminals across the United States.
Arc melting
Arc melting is a metallurgical processing method in which an electric arc between electrodes melts metals or alloys, from laboratory button samples to multi-ton vacuum arc remelting ingots.
ARC Prize
The ARC Prize is an annual international competition on Kaggle, run by the nonprofit ARC Prize Foundation, awarding cash prizes for progress on the ARC-AGI reasoning benchmarks.
ARC Raiders
ARC Raiders is a third-person PvPvE extraction shooter by Embark Studios (Nexon), released October 30, 2025 on PC, PS5, and Xbox Series X|S for $39.99. Set on an ARC-ravaged Earth, it won Best Multiplayer at The Game Awards 2025 and sold over 14 million copies.
ARC reactor
The ARC reactor is an MIT tokamak fusion power plant concept using high-temperature superconducting magnets, carried forward since 2018 by Commonwealth Fusion Systems as the plant to follow SPARC.
ARC Resources
ARC Resources Ltd. is a Canadian oil and gas company producing crude oil, condensate, and natural gas in Alberta and British Columbia, acquired by Shell in 2026.
Arc routing
Arc routing is a class of combinatorial optimization problems seeking minimum-cost routes that traverse a network's edges rather than visit its nodes, as in snowplowing and mail delivery.
Arc suppression
Arc suppression covers engineering techniques that reduce or extinguish the electric arc forming when switch, relay, or contactor contacts open or close, protecting the contacts and nearby electronics.
Arc welding
Arc welding is a family of joining processes that melts metals with an electric arc struck between an electrode and the workpiece; the electrode may be consumable or non-consumable.
ARC-AGI
ARC-AGI is a visual grid puzzle benchmark created by François Chollet in 2019. It tests AI systems on novel problems that resist memorization and retrieval from large training data.
Arc-discharge method
The arc-discharge method is a fabrication technique that vaporizes a graphite electrode with an electric arc in a controlled gas, producing fullerenes, carbon nanotubes, and boron nitride nanotubes.
Arc-fault circuit interrupter
An arc-fault circuit interrupter (AFCI), also called an arc fault detection device, is a circuit breaker or receptacle that detects hazardous arcing and cuts power to prevent home electrical fires.
Arc-suppression coil
An arc-suppression coil, also called a Petersen coil or ground-fault neutralizer, is an inductive reactor between a power system's neutral and earth that cancels ground-fault current so arcs self-extinguish.
Arc'teryx
Arc'teryx: Canadian technical outdoor apparel brand founded 1989 in Vancouver (formerly Rock Solid, named after Archaeopteryx), maker of the Alpha SV GORE-TEX hardshell, owned by Amer Sports under Anta, with ReBIRD repair-resale and System 0 circularity programs.
Arca (musician)
Arca (Alejandra Ghersi, born 1990) is a Venezuelan experimental electronic musician, producer, and vocalist; co-producer of Björk's Vulnicura and Kanye West's Yeezus, with albums Xen, Arca, the KiCk series, and XXXXX.
Arca Continental
Arca Continental is a Mexican Coca-Cola bottler and snack maker serving more than 130 million consumers across Mexico, the southwestern United States, Ecuador, Peru, and Argentina.
Arcade (Marvel Comics)
Arcade is a Marvel Comics supervillain created by Chris Claremont and John Byrne, debuting in Marvel Team-Up #65 (1978). A hitman with no superpowers, he kills targets inside Murderworld, his amusement-park deathtrap complex, and later starred in Avengers Arena and the 2022 Murderworld saga.
Arcade (song)
Arcade is a 2019 ballad by Dutch singer Duncan Laurence with Joel Sjöö and Wouter Hardy. It won Eurovision 2019 in Tel Aviv with 498 points and is the most-streamed Eurovision entry on Spotify.