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Copper tubing
Copper tubing, also known as copper pipe, is seamless tube of nearly pure copper used to convey water, gas, refrigerant, and medical gases in plumbing and cooling systems.
Copper wire bonding
Copper wire bonding is a semiconductor packaging technique that connects an integrated circuit die to its lead frame using copper wire, adopted from about 2009 as rising gold prices drove a shift from gold wire.
Copper-based thermoelectrics
Copper-based thermoelectrics are thermoelectric materials in which copper is a principal constituent, offering low-cost, lead-free alternatives to tellurium-based compounds, with figures of merit exceeding 2.0.
Copper-oxo zeolite-catalyzed methane to methanol
Copper-oxo zeolite-catalyzed methane to methanol is the direct partial oxidation of methane to methanol by copper-oxygen species hosted in zeolite pores, inspired by methane monooxygenase enzymes.
Copper–chlorine cycle
The copper–chlorine cycle is a hybrid thermochemical cycle for splitting water into hydrogen, using heat with one electrochemical step and a maximum temperature of about 550 °C.
CopperString
CopperString is a Queensland transmission project connecting Mount Isa and the North West Minerals Province to the National Electricity Market near Woodstock, acquired by the state government in 2023.
Copy Fail
Copy Fail, the common name of CVE-2026-31431, is a Linux kernel privilege escalation flaw disclosed in 2026 that let unprivileged local users gain root access on distributions shipped since 2017.
Copy-move forgery detection
Copy-move forgery detection (CMFD) is a digital image forensics method that finds regions copied and pasted within the same image to hide or duplicate content.
Copy-on-write
Copy-on-write, also called implicit sharing, is a resource-management technique that shares data cheaply and copies it only when first modified, used in memory, file systems, and snapshots.
Copyleft
Copyleft is a licensing method that uses copyright law to keep a work free, requiring all modified versions to be distributed under the same free terms, as with the GNU GPL.
Copyright Directive (EU)
The Copyright Directive, also known as the InfoSoc Directive, is a European Union directive adopted in 2001 to harmonize copyright in the information society and implement the WIPO Internet Treaties.
Coqui (company)
Coqui was a Berlin-based open-source speech technology startup founded in 2021 by four former Mozilla speech engineers, best known for the Coqui TTS toolkit and XTTS voice-cloning models.
Coracle
The coracle (Welsh cwrwgl) is a small, bowl-shaped boat with a basketwork frame and hide covering, used for fishing on Welsh rivers since the seventh century.
Corail (train)
Corail, from confort sur rail, is a family of intercity passenger coaches built for the French national railway SNCF from 1975, introducing air conditioning to second class in France.
Coral North
Coral North, also called Coral Norte, is a floating LNG project under construction in deep water off northern Mozambique, a replica of Coral South with production targeted for 2028.
Coral South FLNG Terminal
Coral South FLNG (Coral Sul FLNG) is a floating liquefied natural gas facility operated by Eni offshore Cabo Delgado, Mozambique, producing the country's first LNG in 2022.
Coral USB Accelerator
The Coral USB Accelerator is a Google USB accessory that adds an Edge TPU coprocessor to an existing computer, offering 4 TOPS of machine learning inferencing performance over USB 3.0.
Corbel
A corbel is a piece of stone, wood, brick, or metal projecting from a wall to carry weight, used to support balconies, cornices, and vault ribs.
Corbett Caudill
Corbett Caudill is an American aerospace engineer who rose at GE Aircraft Engines to vice president of engineering, directing engines for the B-1B, F-16, and Boeing 777.
Corbetti Geothermal Project
The Corbetti Geothermal Project is a planned geothermal power development in the Main Ethiopian Rift, about 250 km south of Addis Ababa, intended to deliver up to 150 MW.
Cord board operation
Cord board operation is the manual method of connecting telephone calls: an operator plugged cord pairs into line jacks, rang the called party, and watched supervisory lamps.
Cord Corporation
Cord Corporation was a Chicago-based holding company formed by Errett Lobban Cord in 1929, controlling Auburn, Duesenberg, the Cord marque, Stinson Aircraft, and American Airways.
Cordelia Schmid
Cordelia Schmid, born 1967 in Mainz, is a German computer scientist and research director at Inria Grenoble known for her work on image features and video recognition.
Cordell Reed
Cordell Reed (1938–2017) was an American nuclear power engineer and energy executive who oversaw Commonwealth Edison's nuclear activities and joined the National Academy of Engineering in 1992.
Cordero Rojo Coal Mine
The Cordero Rojo Coal Mine is a surface thermal coal mine in Campbell County, Wyoming, about 22 miles south of Gillette, owned by the Navajo Transitional Energy Company.
CORDIC
CORDIC (COordinate Rotation DIgital Computer), or Volder's algorithm, is a shift-and-add algorithm for trigonometric, hyperbolic, and linear functions, developed by Jack E. Volder in 1959.
Cordless telephone
A cordless telephone is a telephone whose handset connects to the line by radio through a base station, with DECT the globally dominant type since its 1995 introduction.
Cordless Telephone 2
Cordless Telephone 2, known as CT2, is a British digital cordless telephone standard published in 1989, used for outgoing-only public Telepoint services until Rabbit closed in 1993.
Cordouan Lighthouse
The Cordouan Lighthouse (phare de Cordouan) is an active lighthouse at the mouth of the Gironde estuary in France; built between 1584 and 1611, it is the oldest French lighthouse still in service.
Core analysis
Core analysis is the laboratory study of rock samples taken during or after drilling a well, measuring reservoir properties such as porosity, permeability, and fluid saturation.