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Technology and the built world

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Gang Wu (energy researcher)

Gang Wu is an energy researcher known for atomically dispersed iron–nitrogen–carbon catalysts that could replace platinum in fuel cells, and a Washington University in St. Louis professor since 2024.

Ganga Expressway (गंगा एक्सप्रेसवे)

Ganga Expressway (गंगा एक्सप्रेसवे) is a 594-kilometer, six-lane expressway in Uttar Pradesh, India, linking Meerut and Prayagraj through 12 districts. Inaugurated by Prime Minister Narendra Modi in 2026, it is the state's longest expressway.

Ganga Ram (ਗੰਗਾ ਰਾਮ)

Sir Ganga Ram (1851–1927) was a Punjabi civil engineer and philanthropist of British India who built many Lahore landmarks and endowed hospitals in Lahore and New Delhi.

Ganghwa Island fortifications

The Ganghwa Island fortifications are the walls, forts, and batteries built on Ganghwado near Seoul to defend the Goryeo and Joseon capitals from the 13th to the 19th century.

Gangnam Station

Gangnam Station (강남역) is a subway station in Gangnam-gu, Seoul, served by Line 2 and the Shinbundang Line, and was Seoul Metro's busiest station from 1997 to 2022.

Gano Dunn

Gano Dunn (1870–1953) was an American electrical engineer who headed the J. G. White Engineering Corporation for four decades, led Cooper Union's trustees, and received the 1937 Edison Medal.

Gansu Chongxin power station

Gansu Chongxin power station (中电建崇信电厂) is a 1,320 MW coal-fired power station in Chongxin County, Pingliang, Gansu, China, owned by PowerChina and in commercial operation since 2010.

Gansu Wind Farm

The Gansu Wind Farm, formally the Jiuquan Wind Power Base, is a group of wind farms in Gansu Province, China, recognized as the world's highest-capacity wind farm.

Gansu Xigu power station

Gansu Xigu power station, also known as Lanzhou Xigu power station, is a coal-fired combined heat and power plant in Xigu District, Lanzhou, Gansu, with at least 990 MW capacity.

Gansu Zhengning power station

Gansu Zhengning power station (华能正宁发电厂), also known as the Huaneng Zhengning project, is a 2,000 MW coal-fired power station in Zhengning County, Gansu, China, fully operational since 2025.

Gantry (road)

A gantry, in road engineering, is a structure spanning a carriageway that carries traffic signs, signals, and equipment above the lanes, including variable message signs, lane controls, and tolling equipment.

Gantry crane

A gantry crane is a freestanding overhead lifting machine whose bridge and hoist ride on legs traveling on ground rails or tires, needing no building support.

Gantry-Tau

Gantry-Tau is a parallel kinematic manipulator with three degrees of translational freedom, presented in 2003 at Chalmers University of Technology and patented by ABB, using six fixed-length links on three parallel linear tracks.

Gao Liu

Gao Liu is a Senior Scientist and group leader at Lawrence Berkeley National Laboratory, known for conductive polymer binders for silicon electrodes, and a Fellow of the Electrochemical Society.

Gao Qing Lu

Gao Qing (Max) Lu (逯高清) is a Chinese-born Australian chemical engineer and nanomaterials researcher, Vice-Chancellor of the University of Wollongong since May 2025 after leading the University of Surrey.

Gao Te Electronics

Gao Te Electronics (高特电子) is a Hangzhou-based maker of battery management systems for energy storage, founded in 1998 and listed on ChiNext in June 2026.

Gaofen

Gaofen (高分, "high resolution") is a Chinese series of high-resolution Earth observation satellites and the space-based component of CHEOS, launched since Gaofen-1 in 2013 for disaster, agriculture, and mapping uses.

Gaojing

Gaojing (高景, "high resolution view"), marketed internationally as SuperView, is a Chinese commercial high-resolution Earth observation satellite series owned by China Siwei, launched from 2016 and delivering sub-meter imagery.

Gaokao Benchmark

The Gaokao benchmark (GAOKAO-Bench) is an evaluation suite testing large language models on questions from China's National College Entrance Examination, built by OpenLMLab at Fudan University in May 2023.

Gaoshiti Gas Field

Gaoshiti Gas Field (高石梯气田) is a natural gas field in the central Sichuan Basin, China, producing from the Sinian Dengying Formation with breakthrough well Gaoshi-1 in 2011.

Gap acceptance theory

Gap acceptance theory is a traffic flow theory modeling how yielding drivers and pedestrians decide whether a gap in priority traffic allows entering, crossing, or merging.

Gap filler

A gap filler, also called an on-channel repeater, is a low-power broadcasting device that retransmits radio or TV signals on the same frequency into shadowed areas.

GarageBand

GarageBand, also known as Apple GarageBand, is Apple's digital audio workstation for macOS, iOS, and iPadOS, introduced in 2004 and now bundled free with every new Mac.

garak

garak, short for Generative AI Red-teaming & Assessment Kit, is an open-source, Apache 2.0-licensed Python framework for finding holes in LLM-based systems that NVIDIA officially contributes to.

Garamantes

The Garamantes were an ancient Libyan people of the central Sahara whose kingdom, centered on the Wadi al-Ajal in Fazzan, Libya, flourished from about the first millennium BC.

Garante per la protezione dei dati personali

The Garante per la protezione dei dati personali, commonly Garante Privacy, is Italy's independent data protection authority, established by the 1996 privacy law and based at Piazza Venezia in Rome.

Garbage collection (computer science)

Garbage collection (GC), also called automatic garbage collection, is automatic memory management in which a runtime reclaims heap memory a program no longer uses, freeing developers from manual deallocation.

Garbage disposal unit

A garbage disposal unit, or garbage disposer, is a device under a kitchen sink that grinds food waste into the drain, common in about half of US households.

Garbage truck

A garbage truck, also called a refuse collection vehicle or dustcart, is a motor vehicle that collects refuse, compacts it, and hauls it to landfills.

Garbhagriha

The garbhagriha, Sanskrit for "womb-chamber," is the innermost sanctum of a Hindu temple, a small, dark, usually square chamber housing the deity's image or linga.