42,772 articles
Gregory A. Sotzing
Gregory A. Sotzing, also published as G.A. Sotzing, is an American polymer chemist and professor at the University of Connecticut working on electrochromic polymers and dielectric energy storage.
Gregory Breit
Gregory Breit was an American nuclear and theoretical physicist, elected to the National Academy of Sciences in 1939, known for the Breit interaction and the Breit–Wigner formula.
Gregory C. Beroza
Gregory C. Beroza is an American seismologist, on the Stanford University faculty since 1990, known for research on earthquake sources and for machine-learning methods that improved earthquake catalogs.
Gregory C. Fu
Gregory C. Fu is an American chemist and Norman Chandler Professor of Chemistry at Caltech, elected to the National Academy of Sciences in 2014, known for nickel- and copper-catalyzed cross-coupling reactions and asymmetric nucleophilic catalysis.
Gregory Chaitin
Gregory Chaitin, born in Chicago in 1947, is a mathematician and computer scientist who co-founded algorithmic information theory, discovered the halting probability Ω, and spent about 40 years at IBM.
Gregory D. Scholes
Gregory D. Scholes is an Australian-born physical chemist, the William S. Tod Professor of Chemistry at Princeton, known for ultrafast laser spectroscopy of photosynthetic light harvesting and quantum coherence.
Gregory Fuchs
Gregory D. Fuchs is an American applied physicist, the James R. Meehl Professor at Cornell University, known for quantum sensing and spin control using defects in diamond, hBN, and GaN.
Gregory G. Howes
Gregory G. Howes is a theoretical plasma physicist and professor at the University of Iowa who studies turbulence in the solar wind and received a 2010 Presidential Early Career Award.
Gregory H. Robinson
Gregory H. Robinson is an American synthetic inorganic chemist at the University of Georgia, known for the first stable neutral diborene and a carbene-stabilized diatomic silicon molecule.
Gregory J. Retallack
Gregory J. Retallack is an Australian-born paleontologist and emeritus professor at the University of Oregon, known for his research on the fossil record of soils.
Gregory N. Tew
Gregory N. Tew is an American polymer scientist and professor at the University of Massachusetts Amherst, known for pioneering biomimetic antimicrobial polymers that mimic host-defense peptides.
Gregory Neil Tew
Gregory Neil Tew is an American polymer scientist and professor at the University of Massachusetts Amherst, a PECASE recipient known for synthetic mimics of antimicrobial peptides.
Gregory P. Baxter
Gregory P. Baxter (1876–1953) was an American analytical chemist at Harvard who determined the atomic weights of 29 elements and was elected to the National Academy of Sciences in 1916.
Gregory S. Engel
Gregory S. Engel is an American chemist and ultrafast spectroscopist at the University of Chicago, known for his 2007 Nature paper reporting wavelike quantum coherence in photosynthetic energy transfer.
Gregory Wannier
Gregory Wannier was a physicist whose name attaches to foundational objects of solid-state physics: Wannier functions, Wannier excitons, the Stark ladder, and Kramers–Wannier duality.
Greigite
Greigite is a ferrimagnetic iron sulfide mineral (Fe₃S₄), the sulfur analog of magnetite, formed in anoxic sediments and biomineralized by magnetotactic bacteria as internal compasses.
Greisen–Zatsepin–Kuzmin limit
The Greisen–Zatsepin–Kuzmin limit, or GZK limit, is a theoretical upper bound of about 5×10^19 eV on the energy of cosmic ray protons traveling cosmological distances.
Grenville Turner
Grenville Turner (died 2024) was a British isotope geochemist who, with Craig Merrihue, invented the argon-40/argon-39 dating method and produced the first precise ages of the Apollo lunar rocks.
Greta R. Patzke
Greta R. Patzke (born 1974) is a German chemist, Full Professor of Inorganic Chemistry at the University of Zurich since 2016, researching water splitting catalysis.
Greta Thunberg
Greta Thunberg, born in Sweden in 2003, is a climate activist who began a school strike outside the Swedish Parliament in 2018 that grew into Fridays for Future.
Grey
Grey, also called an achromatic color, in physics names the gray body, an idealized radiator absorbing a constant fraction of incident radiation regardless of wavelength, between blackbody and white body limits.
Grey atmosphere
The gray atmosphere is an idealized model of a stellar atmosphere in which opacity is independent of frequency, making radiative transfer tractable and yielding a simple temperature law.
Grey prediction model
The gray prediction model is a small-sample forecasting method from gray system theory, whose standard form GM(1,1) fits a differential equation to as few as four observations.
Grey relational analysis
Grey relational analysis, also called gray correlation analysis, is a method from gray system theory, proposed by Deng Ju-Long in 1982, that measures the similarity of data sequences.
Grey wolf optimizer
The gray wolf optimizer (GWO) is a swarm intelligence metaheuristic introduced by Seyedali Mirjalili and colleagues in 2014, mimicking wolf pack hierarchy and cooperative hunting to optimize numerical functions.
Greybody factor
A greybody factor is the frequency-dependent transmission probability for Hawking radiation escaping the potential barrier around a black hole, distorting its spectrum from perfect black-body emission.
Greywacke
Greywacke, also spelled graywacke (German Grauwacke), is a dark gray, hard, poorly sorted sandstone deposited by underwater density currents in deep ocean water near mountain ranges.
GRIB
GRIB, or General Regularly-distributed Information in Binary form, is a binary format defined by the World Meteorological Organization for exchanging gridded weather and climate data.
Gridpoint Statistical Interpolation
The Gridpoint Statistical Interpolation (GSI) is a NOAA data assimilation system, developed at NCEP and operational since 2007, that generates initial conditions for weather forecast models.
Griess test
The Griess test is a colorimetric assay that detects nitrite by forming a red-violet azo dye, first reported in 1879 and widely used for water, food, and biological samples.