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CR-39
CR-39 (Columbia Resin #39) is a thermosetting plastic, allyl diglycol carbonate, developed by Pittsburgh Plate Glass in 1941 and the most widely used material for plastic eyeglass lenses.
CR400AF
The CR400AF, part of the Fuxing (复兴号) family, is a Chinese high-speed train developed by CRRC and rated for 350 km/h, entering service on the Beijing–Shanghai line in 2017.
CR400BF
The CR400BF (复兴号 CR400BF) is a Chinese high-speed electric multiple unit developed by CRRC Changchun under the Fuxing brand, running at 350 km/h on the Beijing–Shanghai high-speed railway since 2017.
Crabster CR200
The Crabster CR200 is a six-legged seabed walking robot developed by South Korea's KRISO to survey, inspect, and manipulate objects on the seafloor at depths down to 200 m.
Crac des Chevaliers and Qal’at Salah El-Din
Crac des Chevaliers and Qal'at Salah El-Din are two medieval Crusader-era castles in northwestern Syria, jointly inscribed as a UNESCO World Heritage Site in 2006.
Crack propagation analysis
Crack propagation analysis is the fracture-mechanics method that predicts how a crack in a loaded structure initiates, grows cycle by cycle, and reaches failure, driving inspection intervals and retirement lives.
Crack tip opening displacement
Crack tip opening displacement (CTOD) is a fracture mechanics parameter measuring how far crack faces open at the tip, used to assess the toughness of welded pipelines and offshore structures.
Cradle-to-cradle design
Cradle-to-cradle design, also called C2C, is a design philosophy by William McDonough and Michael Braungart, set out in their 2002 book, that treats materials as nutrients rather than waste.
Craftsman (tools)
Craftsman, also known as Sears Craftsman, is an American tool brand created by Sears in 1927 and owned since 2017 by Stanley Black & Decker.
Cragstan Giant Robot
The Cragstan Giant Robot, best known as Mr. Robot, is an 11-inch battery-operated tin toy robot made in Japan by Yonezawa around 1960 and imported by Cragstan.
Craig A. Grimes
Craig A. Grimes is an American electrical engineer and materials scientist at Penn State known for titanium dioxide nanotube arrays used in solar cells and hydrogen sensing.
Craig Costello
Craig Costello is an Australian cryptographer known for isogeny-based post-quantum cryptography; he helped develop SIKE, which was broken in 2022, and is now a professor at QUT.
Craig Duvall
Craig Duvall is an American biomedical engineer, the Cornelius Vanderbilt Professor at Vanderbilt University, known for smart polymer drug delivery and a 2017 Presidential Early Career Award.
Craig E. Philip
Craig E. Philip is an American civil engineer at Vanderbilt University and former CEO of Ingram Barge Company, elected to the National Academy of Engineering in 2014.
Craig Federighi
Craig Federighi is an American software engineer and Apple's senior vice president of Software Engineering, overseeing iOS, macOS, watchOS, and visionOS, as well as Apple Intelligence and Siri.
Craig Gentry
Craig Gentry is an American cryptographer who constructed the first fully homomorphic encryption scheme in 2009, solving a 1978 open problem, and received a MacArthur Fellowship in 2014.
Craig I. Fields
Craig I. Fields is an American defense-technology executive and physicist who directed DARPA until his 1990 removal and chaired the U.S. Defense Science Board for 15 years.
Craig Marks
Craig Marks (1929–2009) was an American automotive engineer who spent 37 years developing powertrain, safety, and emissions technology at Ford, General Motors, and Allied Signal.
Craig R. Barrett
Craig R. Barrett, born in 1939, is an American materials scientist who taught at Stanford before joining Intel in 1974 and rising to CEO and chairman.
Craig S. Criddle
Craig S. Criddle is an environmental engineer and Professor Emeritus at Stanford University, known for the CANDO nitrogen-removal process and for making protein from stranded methane.
Craig Station
Craig Station, also called the Craig Generating Station, is a three-unit, coal-fired power plant near Craig, Colorado, operated by Tri-State and kept open past its planned 2025 retirement by federal emergency orders.
Craig Steven Wright
Craig Steven Wright is an Australian computer scientist and businessman whose long-running claim to be Satoshi Nakamoto, Bitcoin's creator, was rejected by a UK court in 2024.
Craig Thomas Bowman
Craig Thomas (Tom) Bowman is an American combustion chemist and Professor of Mechanical Engineering, Emeritus, at Stanford University, known for experimental studies of pollutant-forming reactions in flames.
Crane (machine)
A crane is a machine for lifting, lowering, and horizontally moving a load, ranging from small jib cranes to tower cranes over 100 m tall and mobile machines lifting hundreds of tonnes.
Crane Bridge
Crane Bridge is a Grade I listed 15th-century stone bridge on Crane Street carrying the road across the River Avon in Salisbury, Wiltshire, with four splayed arches, four cut-waters, and an 1898 widening; list entry 1240793.
Crane Clean Energy Center
The Crane Clean Energy Center is the renamed Three Mile Island Unit 1 nuclear plant in Pennsylvania, shut down in 2019 and being restarted for Microsoft.
Crane Company
Crane Company is an American manufacturer of engineered components for aerospace, defense, space, and process industries. Founded in Chicago in 1855, the current company was created in 2023.
Crane NXT, Co.
Crane NXT, Co. (NYSE: CXT) is an American industrial technology company in Waltham, Massachusetts, formed in 2023 from Crane Holdings, known for banknote security and payment authentication.
Crank and slotted lever quick-return mechanism
The crank and slotted lever quick-return mechanism is a linkage that converts uniform crank rotation into reciprocating ram motion with a quicker return stroke, the standard drive of mechanical shapers.
Crank-rocker linkage
A crank-rocker linkage is a planar four-bar linkage whose crank makes complete revolutions while the rocker only oscillates, converting continuous rotary motion into oscillating motion in machines like windshield wipers.