All articles starting with G
18,970 articles
Gas duster
A gas duster, also called canned air or compressed air, is a pressurized canister of liquefied gas propellant that blows dust off keyboards, computers, and printers.
Gas electron multiplier
The gas electron multiplier (GEM) is a particle detector component invented at CERN in 1997: a copper-clad polymer foil with microscopic holes where electrons multiply in a gas avalanche.
Gas exchange
Gas exchange, also called gaseous exchange, is the biological process by which organisms take up oxygen from the environment and release carbon dioxide produced by aerobic metabolism.
Gas fermentation
Gas fermentation is a bioprocess in which microorganisms convert carbon monoxide, carbon dioxide, and hydrogen into chemicals and fuels, most commonly ethanol, recycling industrial waste gases.
Gas flare
A gas flare, also called a flare stack, is a device that burns waste gases at oil production sites, flaring about 151 billion cubic meters globally in 2022.
Gas gangrene
Gas gangrene, or clostridial myonecrosis, is a rapidly fatal muscle infection caused by toxin-producing Clostridium, chiefly C. perfringens, treated by urgent debridement plus penicillin and clindamycin.
Gas giant
A gas giant, or gas planet, is a large planet composed mostly of hydrogen and helium with no true surface; Jupiter and Saturn are examples.
Gas holder
A gas holder, or gasometer, is a large container that stores town gas or natural gas at near atmospheric pressure, its volume changing as gas is added or withdrawn.
Gas kinetic scheme
The gas kinetic scheme (GKS) is a finite-volume computational fluid dynamics method that computes numerical fluxes from the time-evolution solution of the Boltzmann equation rather than a Riemann solver.
Gas laws
The gas laws are empirical relationships describing how the pressure, volume, temperature, and amount of a gas depend on one another, combining into the ideal gas law, PV = nRT.
Gas lift
Gas lift is an artificial lift method for oil and gas wells in which high-pressure gas is injected into the tubing to lighten the fluid column.
Gas Light
Gas Light is Patrick Hamilton's 1938 British stage thriller about a husband who manipulates his wife into doubting her sanity; it inspired the 1940 and 1944 Gaslight films and the term gaslighting.
Gas lighting
Gas lighting, also called gas lamp lighting, is the production of artificial light by burning gaseous fuel, historically coal gas, first demonstrated on London's Pall Mall in 1807.
Gas mask
A gas mask is a tight-fitting full-face respirator that draws inhaled air through a filter removing toxic gases and particles, developed after poison gas first appeared in 1915.
Gas metal arc welding
Gas metal arc welding (GMAW), commonly called MIG welding, is an arc welding process in which a continuously fed wire electrode and shielding gas melt the joint.
Gas Mound
Gas Mound, locally Sonar Bhat, is a centrally protected archaeological mound at Gas village, Palghar district, Maharashtra (ASI entry 1851, 25¼ gunthas), near the ancient sites of Sopara, Nirmal, and Brahma hill.
Gas Plant Stadium
Gas Plant Stadium was the proposed $1.3 billion, 30,000-seat Tampa Bay Rays ballpark anchoring the $6.5 billion Historic Gas Plant District redevelopment in St. Petersburg, Florida; approved in 2024, it collapsed in March 2025 after Hurricane Milton damage, and the city now redevelops the site without a ballpark.
Gas porosity
Gas porosity is a casting defect in which gas bubbles, usually dissolved hydrogen in molten aluminum, become trapped during solidification and form rounded voids that reduce strength and fatigue life.
Gas Scavengers
Gas scavengers (anesthetic gas scavenging systems, AGSS) capture waste anesthetic gases from anesthesia circuits and ventilators. Active vacuum and passive charcoal designs cut room concentrations about 71%, protecting staff from N2O and halogenated agents.
Gas space heater
A gas space heater burns natural gas or LPG to warm a single room or, in ducted form, a whole house, as distinct from a central furnace.
Gas stove
Gas stove: cooking appliance burning natural gas, LPG, or coal gas at open burners and ovens; patented by James Sharp in 1826, common in the US by 1890, used in about a third of US homes, and debated for NO2 emissions.
Gas Street Basin
Gas Street Basin is a canal basin in central Birmingham where the Worcester & Birmingham Canal meets the Birmingham Canal Navigations Main Line, once separated by the Worcester Bar.
Gas to liquids
Gas to liquids (GTL) is an industrial chemical process that converts natural gas into liquid fuels such as diesel and naphtha, usually by Fischer–Tropsch synthesis; the largest plant is Pearl GTL in Qatar.
Gas Transmission Northwest
Gas Transmission Northwest is a TC Energy-owned interstate natural gas pipeline, operating since 1961, that carries Canadian and Rocky Mountain gas through Washington and Oregon toward California.
Gas Transmission System Operator of Ukraine
Gas Transmission System Operator of Ukraine (Оператор ГТС України, GTSOU) is the independent operator of Ukraine's main gas pipelines, certified in December 2019 under the EU's ISO unbundling model.
Gas tube
A gas tube is a slender conduit in a gas-operated firearm that carries propellant gas from the barrel to the bolt carrier, cycling the action.
Gas tungsten arc welding
Gas tungsten arc welding, or TIG welding, is an arc welding process using a non-consumable tungsten electrode and an inert gas shield, valued for precision on thin materials.
Gas turbine
A gas turbine, also called a combustion turbine, is a heat engine operating on the Brayton cycle that drives generators, propels aircraft, and powers ships.
Gas turbine locomotive
A gas turbine locomotive is a locomotive powered by a gas turbine instead of a diesel engine, most often driving a generator that feeds electric traction motors.
Gas Turbine-Modular Helium Reactor
The Gas Turbine-Modular Helium Reactor (GT-MHR) is a helium-cooled high-temperature reactor design, developed by General Atomics and OKBM in Russia, that drives a gas turbine directly instead of producing steam.