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Glass electrode
A glass electrode, or pH electrode, is a pH-sensitive electrode with a special glass membrane that is the standard sensing element of the pH meter.
Glass fiber
Glass fiber, also called fibrous glass, is a filament of inorganic glass drawn from molten glass, used to reinforce composites, insulate buildings, and transmit light in optical fiber.
Glass fiber filter
A glass fiber filter is a depth filter made of fine borosilicate glass fibers that removes suspended particles from liquids and gases in laboratory and industrial filtration.
Glass production
Glass production, also called glass manufacturing, is the industrial process of melting silica sand, soda ash, and limestone to make flat glass, containers, and fibers.
Glass transition
The glass transition, or glass transition temperature (Tg), is the temperature at which a supercooled liquid's viscosity is so high it behaves as a solid.
Glass wool
Glass wool, also known as fiberglass insulation, is an insulating material made of fine interwoven glass fibers that trap air, used in buildings, vehicles, and appliances.
GLASS-JWST
GLASS-JWST (Through the Looking GLASS) is a James Webb Space Telescope Early Release Science program led by Tommaso Treu that observed the lensing cluster Abell 2744.
Glassblowing
Glassblowing is a glassforming technique that inflates molten glass into hollow shapes through a tube, invented in the Syro-Palestinian region in the first century B.C.
Glassy carbon electrode
A glassy carbon electrode (GCE), also called a vitreous carbon electrode, is a working electrode made of glassy carbon, prized for its wide potential window and chemical inertness in electroanalysis.
Glassy gels
Glassy gels are polymer materials containing over 54% ionic liquid that stay stiff like plastic yet stretch like a gel, introduced at NC State in 2024.
GLAST (tokamak)
GLAST, short for Glass Spherical Tokamak, is a series of small experimental spherical tokamaks in Islamabad, Pakistan, using an insulating Pyrex glass vacuum vessel instead of metal.
Glauber dynamics
Glauber dynamics, or the Glauber process, is a Markov chain that flips Ising spins one at a time toward the Boltzmann distribution, introduced by Roy J. Glauber in 1963.
Glauber theory
Glauber theory is a multiple-scattering formalism introduced by Roy J. Glauber in 1955 that calculates how high-energy particles scatter from composite targets such as nuclei.
Glauber-Sudarshan P representation
The Glauber-Sudarshan P representation is a phase-space representation in quantum optics, introduced in 1963, that serves as the standard criterion for classical versus nonclassical light.
Glauberite
Glauberite is a monoclinic sodium-calcium sulfate mineral, Na₂Ca(SO₄)₂, described by Alexandre Brongniart in 1808 from a Spanish salt deposit and mined as an ore of sodium sulfate for detergents, glass, and paper.
Glauconite
Glauconite is a green iron- and potassium-rich clay mineral of the mica group, named in 1828 from the Greek glaucos for bluish green; sand rich in it is called greensand.
Gleason's theorem
Gleason's theorem is a 1957 result in mathematical physics showing that quantum probabilities must follow the Born rule in Hilbert spaces of dimension three or higher.
Gleb Dobrovolsky
Gleb Dobrovolsky, full name Gleb Vsevolodovich Dobrovolsky (Глеб Всеволодович Добровольский; 1915–2013), was a Russian soil scientist who founded the first soil science faculty in Russia's universities.
Gleb Yushin
Gleb Yushin (Глеб Юшин) is a materials scientist, professor at Georgia Tech, and co-founder and chief technology officer of Sila Nanotechnologies, known for silicon-carbon battery anodes.
Gleissberg cycle
The Gleissberg cycle is an 80- to 100-year modulation of the Sun's 11-year sunspot cycle, named for German astronomer Wolfgang Gleissberg, who described it around 1938.
Glen Baxter (mathematician)
Glen Baxter (died 1983) was a mathematician in probability and combinatorics whose operator identity underlies fluctuation theory and gave the Rota–Baxter algebra and Baxter permutations.
Glen M. MacDonald
Glen M. MacDonald is a UCLA geographer and paleoclimatologist elected to the National Academy of Sciences in 2015, known for work on treelines and drought.
Glen P. Peters
Glen P. Peters is a Norwegian-based climate scientist at the CICERO Center for International Climate Research in Oslo, known for the 2016 commentary "The trouble with negative emissions".
Glenn C. Micalizio
Glenn C. Micalizio is an American organic chemist who joined UC Irvine in 2025, known for titanium-mediated reductive cross-coupling reactions and the synthesis of the non-opioid analgesic conolidine.
Glenn H. Fredrickson
Glenn H. Fredrickson is an American soft matter theorist and Distinguished Professor at UC Santa Barbara, known for pioneering field-theoretic simulation of self-assembling block copolymers.
Glenn Martyna
Glenn J. Martyna is a computational physicist and chemist known for the Nosé–Hoover chain thermostat and the Martyna–Tobias–Klein equations for constant-pressure molecular dynamics, developed in the 1990s.
Glenn S. Orton
Glenn S. Orton is an American planetary scientist at the Jet Propulsion Laboratory, where since 1977 he has studied the atmospheres of the outer planets.
Glenn T. Seaborg
Glenn T. Seaborg (1912–1999) was an American nuclear chemist at Berkeley who co-discovered plutonium and nine other elements, won the 1951 Nobel Prize in Chemistry, and chaired the Atomic Energy Commission.
Glenn van de Ven
Glenn van de Ven is a Dutch astronomer known for dynamical modeling of galaxies and the CALIFA survey, and a professor at the University of Vienna since 2019.
Glennys Farrar
Glennys Farrar is an American theoretical physicist at New York University, known for 1973 scaling laws showing quarks are physically present in matter and for dark matter models.