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Gwrych Castle
Gwrych Castle is a Grade I listed castellated country house near Abergele in Conwy, north Wales, built between the 1810s and 1822 by Lloyd Hesketh Bamford-Hesketh.
Gwynne Shotwell
Gwynne Shotwell, born 1963, is an American mechanical engineer and President and COO of SpaceX, where she joined in 2002 as employee No. 11 and won the 2008 NASA resupply contract.
GXO Logistics
GXO Logistics is an American contract logistics company headquartered in Greenwich, Connecticut, spun off from XPO Logistics in 2021, which designs and operates warehouses and fulfillment centers for other businesses.
Gyanvapi Mosque (ज्ञानवापी मस्जिद)
Gyanvapi Mosque (ज्ञानवापी मस्जिद) is a mosque in Varanasi, India, attributed to Aurangzeb and built beside the Kashi Vishwanath Temple after the earlier temple was dismantled in 1669.
Gyeongbokgung
Gyeongbokgung, also known as Gyeongbokgung Palace, is the primary royal palace of the Joseon dynasty, built in Seoul in 1395 and still the largest of the city's five grand palaces.
Gyeongbu Expressway
The Gyeongbu Expressway (경부고속도로) is a principal South Korean toll expressway connecting Seoul and Busan, built from 1968 to 1970 as the backbone of the country's road transport.
Gyeongbu Line
The Gyeongbu Line (경부선) is the trunk railway of South Korea, running 441.7 km from Seoul to Busan. Opened in 1905, it carries KTX high-speed trains today.
Gyeongcheonsa Pagoda
The Gyeongcheonsa Pagoda is a ten-story marble Buddhist pagoda built in 1348 in Goryeo, now a National Treasure displayed in the National Museum of Korea.
Gyeongin Line
The Gyeongin Line (경인선) is the 27 km railway between Guro Station in Seoul and Incheon Station, opened in 1899 as the first railway built in Korea.
Gyeongseong urban improvement project
The Gyeongseong urban improvement project (경성시구개수사업) was a road and street reorganization program the Japanese colonial Government-General launched in Seoul in 1912, reshaping the central grid over 25 years.
Gyeongui Line
The Gyeongui Line (경의선; 京義線) is a Korean railway opened in 1906 from Seoul to Sinuiju, later severed by Korea's division; its southern section runs from Seoul to Dorasan.
Gym bag
A gym bag, also known as a sports bag, is a bag used to carry clothing, footwear, toiletries, and equipment for sport or exercise, with compartments separating clean gear from damp items.
Gymnasium-Robotics
Gymnasium-Robotics is an open-source Python library maintained by the Farama Foundation that provides robotics and goal-based reinforcement learning environments built on the Gymnasium API and MuJoCo physics simulator.
Gynoid
A gynoid, also known as a fembot, is a robot or android with female characteristics, a term coined by Isaac Asimov in 1979 from the Greek for woman.
Gypsy Joker Motorcycle Club
The Gypsy Joker Motorcycle Club, also known as the Gypsy Jokers MC, is an outlaw motorcycle club founded in San Francisco in 1956, active mainly in the Pacific Northwest since the 1980s.
Gyrator (microwave device)
A microwave gyrator is a passive, non-reciprocal two-port ferrite device producing a 180-degree differential phase shift, defined by Bernard Tellegen in 1948 and first realized by C. L. Hogan at Bell Labs in 1952.
Gyratory crusher
A gyratory crusher is a compression-type rock crusher with a conical head gyrating inside a fixed cone, used as the primary crusher in high-capacity mines, crushing thousands of tonnes per hour.
Gyrocompass
A gyrocompass, also called a gyroscopic compass, is a non-magnetic navigational instrument that uses a fast-spinning gyroscope and Earth's rotation to find true north automatically, replacing magnetic compasses on large ships.
Gyrodyne
A gyrodyne is a hybrid rotorcraft that hovers with engine-driven rotors and cruises in autorotation, between helicopter and autogiro, first flown as the Fairey Gyrodyne in 1947.
Gyroid lattice infill
Gyroid lattice infill is a 3D printing infill pattern based on the gyroid minimal surface, offering near-isotropic strength, continuous toolpaths with few retractions, and use in implants and aerospace.
Gyrojet
The Gyrojet pistol and carbine, made by MB Associates of San Ramon, California, fired self-propelled miniature rockets; about 1,900 were built between 1962 and 1972, and none won a military contract.
Gyroplane accidents and safety
Gyroplane accidents and safety concerns loss of control, not engine failure: pilot-induced oscillation, power pushover, and retreating blade stall, addressed by stability standards like BCAR Section T.
Gyrotron
A gyrotron is a high-power vacuum electron tube, invented in the USSR in 1964, that generates millimeter-wave radiation and is the standard heating source for fusion plasmas.
Gyrover
Gyrover is a single-wheel, gyroscopically stabilized mobile robot developed at Carnegie Mellon University by H. Benjamin Brown, Jr. and Yangsheng Xu, in which an internal spinning flywheel provides stabilization and steering.
Gyu‐Chul Yi
Gyu-Chul Yi (이규철) is a South Korean physicist and professor at Seoul National University known for zinc oxide nanorod growth and flexible LEDs grown on graphene.
Gzip
Gzip, also known as GNU Zip, is a lossless data compression utility and file format created by Jean-loup Gailly and Mark Adler, first released in 1992.
H Allen Franklin Combined Cycle power station
H Allen Franklin Combined Cycle power station is a natural gas-fired combined-cycle plant in Smiths, Alabama, owned by Southern Power, online since 2002 with about 1,996 MW across nine generators.
H Company
H Company is a Paris-based artificial intelligence company founded in late 2023 by four former Google DeepMind researchers, building agentic AI that acts on software interfaces to complete multi-step tasks.
H L Culbreath Bayside power station
The H L Culbreath Bayside power station is Tampa Electric's largest plant, a natural gas-fired station on Hillsborough Bay in Tampa, Florida, created by repowering the coal-fired Gannon Station in 2003 and 2004.
H-bridge inverter
An H-bridge inverter, also called a full-bridge inverter, converts DC to AC with four switches in an H shape, and is the building block of solar inverters and motor drives.