61,984 articles
Dumbwaiter
A dumbwaiter is a small vertical lift that carries food, laundry, documents, or merchandise between floors of a building, distinguished from an elevator by carrying no people.
Dummy load
A dummy load, also called an RF load or phantom antenna, is a resistive termination that absorbs radio-frequency power as heat, letting transmitters be tested without radiating a signal.
Dump truck
A dump truck, also known as a tipper lorry, is a truck with an open-box bed raised by a hydraulic hoist to unload sand, gravel, or debris.
Dumpster
Dumpster, originally a 1935 Dempster Brothers trademark from Knoxville, Tennessee, is the American common name for a large steel waste container emptied mechanically into a garbage truck, the British equivalent being the skip.
Dumsor
Dumsor, also written Dum-Sor or Dum So, is the Ghanaian term from Akan words for "off" and "on" for the country's persistent, erratic power outages and load shedding.
Dunant (submarine cable)
Dunant is a private transatlantic submarine communications cable owned by Google, running from Virginia Beach to Saint-Hilaire-de-Riez, France, and entering service around 2020 to 2021.
Duncan S. Davies
Duncan S. Davies (1921–1987) was a British chemical industry research leader who ran ICI's corporate laboratories and served as the UK Department of Industry's Chief Scientist and Engineer.
Dune buggy
The dune buggy, also called a beach buggy, is a lightweight recreational vehicle built or modified for driving over sand, popularized on the California coast in the 1960s.
Dung beetle optimization algorithm
The dung beetle optimization algorithm is a swarm-based metaheuristic introduced by Jiankai Xue and Bo Shen in 2022 that mimics dung beetle behaviors to solve optimization problems.
Dunga Oil Field
The Dunga oil field (Дунга) is an onshore oil and gas field in western Kazakhstan about 50 km north of Aktau, discovered in 1966 and producing commercially since 2000.
Dungeness nuclear power plant
Dungeness nuclear power plant is a pair of neighboring power stations on the Kent coast in England, Dungeness A (1965 to 2006) and Dungeness B (1983 to 2018).
Dungeness nuclear power stations
The Dungeness nuclear power stations were two adjacent plants on the Kent coast in England: Magnox station Dungeness A, generating 1965 to 2006, and AGR station Dungeness B until 2021.
Dunhua hydroelectric plant
The Dunhua hydroelectric plant (敦化抽水蓄能电站) is a 1,400 MW pumped storage plant in Dunhua, Jilin, China, with four 350 MW reversible units that was fully commissioned in April 2022.
Dunkelflaute
Dunkelflaute, German for "dark wind lulls", is a period of days with low wind and sun that leaves wind and solar power generating very little electricity.
Dunkerque-class battleship
The Dunkerque class was a pair of French fast battleships of the 1930s, Dunkerque and Strasbourg, with eight 330 mm guns in two all-forward quadruple turrets.
Dunkirk LNG Terminal
The Dunkirk LNG Terminal is an LNG import and regasification terminal at Loon-Plage in the port of Dunkirk, France, which opened in 2017 and is owned by Dunkerque LNG.
Dunlop pneumatic tire bicycle
The Dunlop pneumatic tire bicycle carries the air-filled tire that John Boyd Dunlop, a Scottish veterinary surgeon in Belfast, developed for his son's tricycle in 1887–1888 and patented.
Dunlop Tyres
Dunlop Tyres is a premium tire brand originating from the pneumatic tire patented by John Boyd Dunlop in 1888, now owned by Sumitomo Rubber Industries.
Dunluce Castle
Dunluce Castle is a ruined medieval castle on a coastal cliff on the north Antrim coast of Northern Ireland, built around 1500 by the MacQuillans.
Dunnottar Castle
Dunnottar Castle, also known as Dunotter Castle, is a ruined cliff-top fortress in Aberdeenshire, Scotland, best known for hiding the Scottish crown jewels in 1651.
Dunrobin Castle
Dunrobin Castle, near Golspie in Sutherland, Scotland, is the historic seat of the Earls and Dukes of Sutherland, largely rebuilt by Sir Charles Barry in the 1840s.
Dunsfold Aerodrome
Dunsfold Aerodrome, also known as Dunsfold Park, is a private airfield in Surrey, England, built in 1942 and the Hawker Hunter and Harrier flight test center.
Duobinary modulation
Duobinary modulation, known as optical duobinary in fiber systems, is a correlative coding technique proposed by Adam Lender in 1963 that halves bandwidth and increases chromatic dispersion tolerance.
Duolicious
Duolicious, also known as Duolicious.app, is a free, open-source dating app created by an anonymous 4chan user in 2023 that matches users by personality quiz answers instead of swiping.
Duolingo Max
Duolingo Max is a subscription tier of the Duolingo language learning app, announced in 2023. It uses GPT-4 and GPT-4o to offer advanced features like Video Call with Lily.
Dupe (product)
A dupe (product dupe), short for duplicate, is a lower-priced product made to resemble a costlier one, sold legally under its own brand rather than as a counterfeit.
DUPIC
DUPIC (Direct Use of spent PWR fuel In CANDU) is a proposed nuclear fuel cycle that refabricates spent PWR fuel into CANDU reactor fuel without chemical separation.
Duplex (building)
A duplex (plural duplexes), also called a duplex house, is a single residential building containing two complete dwelling units, each with its own kitchen, bathroom, and entrance, arranged side by side or stacked.
Duplex (telecommunications)
Duplex, or duplex communication, is a telecommunications mode allowing transmission in both directions between two points: full duplex operates simultaneously, while half duplex does not; simplex carries one way only.
Duplex locomotive
A duplex locomotive, also called a duplex drive locomotive, is a steam locomotive with two engine units on one rigid frame, first built in America in 1937.