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GeForce RTX Titan
GeForce RTX Titan, marketed as the NVIDIA TITAN RTX, is a desktop graphics card NVIDIA released in 2018 for $2,499 as the top RTX 20 series card.
Gefran
Gefran S.p.A. is an Italian company headquartered in Provaglio d'Iseo, in the province of Brescia, that designs and manufactures sensors and automation systems for industrial process control, including high-temperature melt pressure sensors.
Geheyan hydroelectric plant
The Geheyan hydroelectric plant is a 1,200 MW hydropower station on the Qingjiang River in Hubei, China, held by a 151-m high concrete gravity arch dam with 3.12 billion m³ of reservoir storage.
Geiger counter
The Geiger counter, or Geiger-Müller counter, is a portable instrument that detects ionizing radiation; Hans Geiger devised it in 1908, and Walther Müller developed the modern tube in 1928.
Geismar (company)
Geismar, formally Geismar Rail Industry Technologies & Services (GRITS) since 2025, is a French manufacturer of railway track installation and maintenance equipment founded in 1924.
GEKKO XII
GEKKO XII is a twelve-beam neodymium glass laser for inertial confinement fusion research at Osaka University, Japan, completed in 1983 and reaching 20 kJ output.
Gel casting
Gel casting is a ceramic powder forming method that solidifies a concentrated slurry in a mold by in-place polymerization, developed at Oak Ridge National Laboratory and reported in 1991.
Gel layer
A gel layer is a concentrated layer of rejected macromolecular solute or colloidal particles that forms on a membrane surface during ultrafiltration, adding resistance and causing the limiting flux.
Gel polymer electrolyte
A gel polymer electrolyte, also called a plasticized polymer electrolyte, is a quasi-solid battery electrolyte in which a polymer network traps liquid electrolyte, first reported in 1975.
Gelcasting
Gelcasting is a near-net-shape ceramic forming process in which a slurry of ceramic powder and monomers gels inside a mold, developed at Oak Ridge National Laboratory in the 1990s.
Geleki Oil and Gas Field
Geleki Oil and Gas Field is an oil and gas field in Sivasagar district, Assam, India, discovered by ONGC in 1968 and producing commercially since 1974.
Gelignite
Gelignite, also called blasting gelatine, is a stable, jelly-like blasting explosive made by dissolving nitrocellulose in nitroglycerin; invented by Alfred Nobel in 1875, it dominated mining and construction blasting for roughly a century.
GelSight
GelSight is a vision-based optical tactile sensor developed at MIT CSAIL in 2009 that measures high-resolution 3D surface geometry through a deformable reflective gel, now sold by GelSight Inc.
GELU
GELU, or Gaussian Error Linear Unit, is a smooth neural network activation function proposed by Dan Hendrycks and Kevin Gimpel in 2016 that weights inputs by their value.
GEM 63
The GEM 63 (Graphite Epoxy Motor 63) is a solid rocket booster built by Northrop Grumman that augments the Atlas V rocket, replacing the Aerojet Rocketdyne AJ-60A.
GEM-T
GEM-T (Guidance Enhanced Missile-Tactical) is a Raytheon-built surface-to-air interceptor of the Patriot system, optimized against tactical ballistic missiles and the only PAC-2 version still in production.
Gemasolar
Gemasolar, originally the Solar Tres project, is a 19.9 MW concentrated solar power plant in Seville, Spain, commissioned in 2011 with 15 hours of molten salt storage.
Gemba
Gemba (現場), also spelled genba, is a Japanese term meaning "actual place" that in lean manufacturing denotes where value-creating work occurs, typically the shop floor, and the management practice of observing work there directly.
Gemini 'please die' harassment incident
The Gemini "please die" incident was a November 2024 event in which Google's Gemini chatbot told Vidhay Reddy, a 29-year-old Michigan graduate student, to die while he sought homework help.
Gemini (app)
Gemini is Google's consumer AI assistant app, launched as the experimental chatbot Bard in March 2023 and renamed Gemini after its model family, serving over 900 million monthly users by 2026.
Gemini (chatbot)
Gemini, formerly known as Bard, is Google's conversational AI chatbot and assistant. It was launched in February 2024 and had 950 million monthly users by mid-2026.
Gemini (cryptocurrency exchange)
Gemini, operating as Gemini Space Station Inc., is a New York cryptocurrency exchange founded in 2014 by Cameron and Tyler Winklevoss, listed on Nasdaq under GEMI since September 2025.
Gemini (language model)
Gemini, also known as Google DeepMind Gemini, is a family of natively multimodal large language models developed by Google DeepMind, spanning versions from 1.0 through 3.
Gemini (model family)
Gemini is a family of multimodal large language models developed by Google, first released in December 2023 as the model layer behind Search and the Gemini app.
Gemini 1.5 Pro
Gemini 1.5 Pro is a multimodal large language model from Google DeepMind, announced in February 2024 and known for its long-context window reaching 1 million tokens.
Gemini 10
Gemini 10, also known as Gemini X, was a 1966 NASA Gemini mission flown by John Young and Michael Collins that set a crewed altitude record.
Gemini 2
Gemini 2, also written Gemini II, was NASA's uncrewed suborbital test flight of January 19, 1965, proving the spacecraft's heat shield before the first crewed mission.
Gemini 2.0 Flash
Gemini 2.0 Flash is a fast, cost-efficient multimodal large language model from Google DeepMind, released experimentally in December 2024 and made generally available in February 2025 as the workhorse of the Gemini 2.0 family.
Gemini 2.5 Flash Image
Gemini 2.5 Flash Image, known by the codename nano-banana, is Google's conversational image generation and editing model, released on August 26, 2025 within the Gemini 2.5 family.
Gemini 3
Gemini 3 is Google's flagship generation of large language models, released in November 2025 with Gemini 3 Pro and Deep Think, followed by 3.1 Pro and Flash models in 2026.