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Technology and the built world

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De Havilland Mosquito

The de Havilland Mosquito, or Wooden Wonder, was a British twin-engine multi-role combat aircraft of the Second World War, built almost entirely of wood and first flown in 1940.

De Havilland Sea Venom

The de Havilland Sea Venom was a British two-seat, all-weather carrier-based jet fighter of the 1950s, the Royal Navy's first, and saw action at Suez in 1956.

De Havilland Sea Vixen

The de Havilland Sea Vixen was a British twin-engine, twin-boom, carrier-based fleet air-defense fighter flown by the Royal Navy's Fleet Air Arm from the late 1950s to the early 1970s.

De Havilland Tiger Moth

The de Havilland Tiger Moth is a British two-seat biplane that served as the Royal Air Force's standard elementary trainer from 1931 through the Second World War.

De Havilland Vampire

The de Havilland Vampire is a British twin-boom jet fighter, first flown in 1943 and used by the Royal Air Force from 1946 into the 1970s.

De Havilland Venom

The de Havilland Venom (DH Venom) was a British jet fighter-bomber developed from the Vampire, serving the RAF from 1952 and flying in Switzerland until the mid-1980s.

De Laval nozzle

The de Laval nozzle, also called the convergent-divergent nozzle, is a tube that accelerates pressurized gas to supersonic speed, used in rocket engines and steam turbines.

De Lisle carbine

The De Lisle carbine was a British bolt-action, integrally suppressed carbine of the Second World War, designed by William Godfray de Lisle for covert commando work.

De Nora

De Nora, founded in Milan in 1923 by Oronzio De Nora, is an Italian multinational known for its DSA electrodes, water treatment, and green hydrogen technologies.

De re aedificatoria

De re aedificatoria (On the Art of Building) is a ten-book Latin treatise on architecture by Leon Battista Alberti, written by 1452 and first printed in Florence in 1485.

De Tomaso

De Tomaso is an Italian sports car manufacturer founded in Modena in 1959 by Argentine racing driver Alejandro de Tomaso, best known for the Ford V8-powered Pantera.

De Tomaso Mangusta

The De Tomaso Mangusta is a mid-engined Italian sports car built in Modena from 1967 to 1971, with a Ford V8 and Giugiaro body; 401 were made.

De Tomaso Pantera

The De Tomaso Pantera is a mid-engined sports car built by Italy's De Tomaso from 1971 to 1993, pairing an Italian body with a Ford V8.

DE-CIX

DE-CIX is a German operator of carrier-neutral Internet exchanges, founded in 1995 in Frankfurt, where thousands of networks from more than 100 countries exchange traffic directly.

De-icing

De-icing is the removal of ice, snow, or frost from aircraft surfaces before flight, usually by spraying heated glycol fluids, under the clean aircraft concept.

DE10-Nano

The DE10-Nano is a Terasic development board built on the Intel Cyclone V SoC FPGA, best known as the reference board of the MiSTer FPGA project.

Dead code elimination

Dead code elimination is a compiler optimization that removes computations whose results cannot affect a program's observable behavior; it is standard in GCC and LLVM and appears in JavaScript bundlers as tree shaking.

Dead Hand

Dead Hand is the Western nickname for Perimeter, a Soviet and Russian system created in the Cold War to transmit a retaliatory nuclear strike order even if leadership was destroyed.

Dead letter queue

Dead letter queue (DLQ), also called dead-letter topic or undelivered-message queue: a holding queue in messaging systems for messages that fail processing after their retry budget, expire, or cannot be routed, for inspection and redrive.

Dead lithium

Dead lithium is metallic lithium in a battery anode that has lost electrical contact with the current collector, causing capacity loss in lithium metal batteries; it can be partly recovered.

Dead mall

A dead mall is a shopping mall, usually an enclosed postwar suburban center, that has declined into high vacancy, low sales, or closure as shoppers move elsewhere.

Dead man's switch

A dead man's switch is a safety mechanism, also called a dead man's handle or pedal, that stops a machine when the operator releases it.

Dead reckoning

Dead reckoning is the navigation method of estimating a vessel's position by applying course steered and distance traveled from the last well-determined position, without external references.

Dead-end clamp

A dead-end clamp, also called a strain or tension clamp, is overhead line hardware that terminates a conductor and carries its full tension into a pole or tower.

Deadbolt

A deadbolt is a door lock bolt rotated by key or thumb-turn, rather than held by a spring latch, and the standard security lock for exterior doors.

Deadfreight

Deadfreight, also written dead freight, is the freight payable by a charterer who supplies less cargo than the voyage charterparty stipulates, compensating the shipowner for reserved space left unfilled.

Deadlock (disambiguation)

Deadlock is a standstill in which no party can progress, used in negotiation and politics, for a hung jury in law, and for blocked computer processes.

Deadlock avoidance

Deadlock avoidance is a control strategy that keeps multi-robot systems, such as warehouse robot fleets, out of circular waits where robots block each other indefinitely.

Deadlock detection

Deadlock detection is the runtime activity of determining that transactions have entered a deadlock, usually by finding a cycle in a wait-for graph of waiting transactions.

Deadstick landing

A deadstick landing, also written dead-stick landing, is a forced landing in which a pilot glides an aircraft to the ground after a complete loss of engine power.