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Circuit Zolder
Circuit Zolder, known locally as Den Omloop, is a permanent motorsport race track in Heusden-Zolder, Belgium, opened in 1963 as the country's first permanent race circuit.
Circuits (mechanistic interpretability)
A circuit in mechanistic interpretability is a subnetwork of a neural network, with its weighted connections, that implements an identifiable behavior, a program anchored by Anthropic's Transformer Circuits Thread.
Circular buffer
A circular buffer, also called a ring buffer or cyclic buffer, is a data structure with a fixed-size buffer whose end wraps to its beginning, so data streams through a fixed allocation indefinitely.
Circular error probable
Circular error probable (CEP) is the radius of a circle centered on the aim point within which 50 percent of a weapon's projectiles or warheads are expected to fall.
Circular Quay
Circular Quay, known to the Gadigal as Warrane, is a harbor cove in Sydney and the city's principal ferry hub, beside the Sydney Opera House.
Circular saw
A circular saw, also known as a buzz saw or Skilsaw, is a power saw that cuts with a toothed rotating disc, used for crosscuts and rip cuts in wood and other materials.
Circular wing
A circular wing is a lifting surface with an approximately circular planform rather than a pair of projecting panels, first flown in annular form in 1913.
Circulation control
Circulation control is a pneumatic aerodynamic technology that augments wing lift by blowing a jet of air over a rounded trailing edge, replacing moving surfaces like flaps.
Circulator
A circulator, or microwave circulator, is a multiport device that routes a signal entering one port only to the next port, using magnetically biased ferrite.
Cirebon power station
The Cirebon power station is a coal-fired plant on the coast of Cirebon Regency, West Java, Indonesia, with a 660 MW unit from 2012 and a 1,000 MW unit from 2023.
Cirq Robotic Arm
Cirq Robotic Arm is a table-mounted, modular robotic surgical system made by Brainlab of Munich, Germany, used in spine surgery, cranial biopsies, and sEEG electrode placement.
Cirrus Aircraft
Cirrus Aircraft, founded as Cirrus Design by the Klapmeier brothers in 1984, is a Duluth, Minnesota manufacturer of SR Series piston aircraft and the SF50 Vision Jet.
Cirrus Airframe Parachute System
The Cirrus Airframe Parachute System (CAPS) is the whole-airframe ballistic parachute standard on all Cirrus Aircraft models, first FAA-certified with the SR20 in 1998 and credited by 2024 with 220 lives saved.
Cirrus SR20
The Cirrus SR20 is a four-seat, single-engine piston light aircraft built by Cirrus Aircraft of Duluth, Minnesota, and certified in 1998 as the first certified aircraft with a standard whole-airframe parachute.
Cirrus SR22
The Cirrus SR22 is a four-seat, single-engine composite piston aircraft built by Cirrus Aircraft of Duluth, Minnesota, certificated in 2000 as a more powerful variant of the SR20.
Cirrus Vision SF50
The Cirrus Vision SF50, also called the Vision Jet, is a single-engine very light business jet from Cirrus Aircraft, certified by the FAA in 2016.
CIS Benchmarks
CIS Benchmarks are consensus-based best-practice guides for securely configuring operating systems, applications, cloud services, and network devices, published by the nonprofit Center for Internet Security.
CIS Controls
The CIS Controls are a prioritized set of cybersecurity safeguards published by the Center for Internet Security, organized as 18 Controls and 153 Safeguards grouped into three Implementation Groups.
Cisco
Cisco Systems, American networking equipment and software company founded 1984 in San Jose by Stanford researchers; $56.7B FY2025 revenue, ~86,200 employees, Splunk acquired March 2024, Silicon One AI networking, 51%+ subscription revenue.
Cisco Catalyst
Cisco Catalyst, also known as the Catalyst switch, is a family of enterprise network switches sold by Cisco Systems since 1994, spanning campus access, distribution, and core switching.
Cisco certifications
Cisco certifications, also called Cisco career certifications, are vendor-issued IT credentials from Cisco Systems covering networking, security, and automation across five levels, from entry CCST to expert CCIE, and remain valid for three years.
Cisco IOS
Cisco IOS (Internetwork Operating System) is the proprietary operating system Cisco developed in the 1980s for its routers and switches, providing routing and switching through a command-line interface.
Cisco LocalDirector
Cisco LocalDirector was a hardware and software load-balancing appliance sold by Cisco Systems in the late 1990s, distributing TCP/IP traffic across servers behind a single virtual IP address.
Cisco Networking Academy
Cisco Networking Academy, also known as NetAcad, is a global IT education program run by Cisco Systems since 1997, teaching networking, cybersecurity, and programming free of charge.
Cisco Nexus
Cisco Nexus is a family of Cisco data center switches running the NX-OS operating system, launched with the Nexus 7000 in 2008 and spanning top-of-rack to modular chassis models.
Cisco Prime
Cisco Prime is a Cisco network management product family whose flagship, Prime Infrastructure, provided provisioning, monitoring, and troubleshooting of wired and wireless devices from 2011.
Cistern
A cistern, also called an aljibe, is a waterproof container, usually underground, that stores water from rainfall, a spring, or an aqueduct, unlike a well that draws groundwater.
Cité des Sciences et de l'Industrie
The Cité des Sciences et de l'Industrie is a French science center in the Parc de la Villette, Paris, opened by President Mitterrand in March 1986.
Cité Internationale Universitaire de Paris
The Cité Internationale Universitaire de Paris (CIUP) is an international residential campus founded in 1921 in the 14th arrondissement, housing about 10,000 mostly foreign students, researchers, and artists.
CITEC
CITEC (Center for Cognitive Interaction Technology) is an interdisciplinary research center of Bielefeld University in Germany, founded in 2007, developing intuitive technical systems and robots.