All articles starting with G
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Geocentric orbit
A geocentric orbit, also called an Earth-centered orbit, is the path of any object circling Earth, from low orbits to the geostationary ring at 35,786 km.
Geochang Apple Theme Park
Geochang Apple Theme Park (거창사과테마파크), a free county-run apple exhibition and experience park in Geochang-eup, Gyeongsangnam-do, South Korea, with a Future Laboratory, apple pizza making, and outdoor apple trees; distinct from the G-APPLE cafe complex.
Geochelone
Geochelone Fitzinger, 1835 is a tortoise genus now restricted to two South Asian star tortoises, G. elegans and G. platynota; formerly it grouped most large tortoises, later split into genera such as Chelonoidis and Centrochelys.
Geochemical baseline mapping
Geochemical baseline mapping is the systematic sampling and analysis of soils, stream sediments, and waters to establish element concentrations across a region, against which contamination or change is measured.
Geochemical exploration
Geochemical exploration is the systematic measurement of chemical properties in natural materials such as rock, soil, sediment, and water to locate mineral deposits through their dispersion halos.
Geochemistry
Geochemistry is the branch of earth sciences studying the chemistry of the Earth, its elements' distribution, and the processes that shaped the planet, founded by Victor Moritz Goldschmidt.
Geochilbu
Geochilbu (거칠부, 502–579) was a Silla general, statesman, and historian who compiled the kingdom's first national history and took ten districts from Goguryeo in 551.
Geochimica et Cosmochimica Acta
Geochimica et Cosmochimica Acta, also known as GCA, is a peer-reviewed scientific journal covering geochemistry and cosmochemistry, published by Elsevier since 1950 and jointly sponsored by the Geochemical Society and the Meteoritical Society.
Geochronology
Geochronology, also called geological dating, is the science of determining the ages of Earth and extraterrestrial materials using radiometric dating, cosmogenic exposure dating, and paleomagnetism.
Geocoding
Geocoding is a geographic information science method that converts human-readable location descriptions, such as postal addresses, into machine-readable geographic coordinates, typically a latitude–longitude pair with a confidence score.
GeoDa
GeoDa, short for Geographic Data Analysis, is a free, open-source desktop program for spatial data analysis developed by Luc Anselin at the University of Chicago.
Geode
A geode is a roughly spherical rock with a hollow interior cavity lined with mineral crystals, formed when dissolved minerals precipitate in volcanic or sedimentary rock.
Geode Capital Mgmt.
Geode Capital Management, LLC is a Boston-based, employee-owned asset manager founded by Fidelity in 2001 that subadvises Fidelity's index funds, including the zero-fee ZERO funds.
Geodesic
A geodesic, or geodesic path, is a locally length-minimizing curve, the straightest possible path through curved space; in the plane geodesics are straight lines, on a sphere great circles.
Geodesic Alliance Fund
Geodesic Alliance Fund is a 2024 venture capital fund managed by Geodesic Capital, John Roos's Foster City firm, targeting $400 million for early-stage deep tech startups.
Geodesic Capital
Geodesic Capital is a California venture capital firm founded in 2015 by John V. Roos and Ashvin Bachireddy with Mitsubishi Corporation, investing Silicon Valley growth-stage capital and helping portfolio companies enter Japan.
Geodesic curvature
Geodesic curvature, written kg, is the curvature of a curve measured within the surface it lies on; a curve with zero geodesic curvature is a geodesic.
Geodesic deviation
Geodesic deviation, also known as the geodesic deviation equation, describes how initially parallel geodesics separate in curved space, giving the relative acceleration determined by the Riemann curvature tensor.
Geodesic dome
A geodesic dome, also called a geodome, is a lightweight spherical structure of triangular struts, first built for a German planetarium in 1922 and popularized by Buckminster Fuller.
Geodesic flow
Geodesic flow is the dynamical system on a Riemannian manifold's tangent bundle that moves each tangent vector along the geodesic it determines at constant speed, modeling free-particle motion.
Geodesic incompleteness
Geodesic incompleteness is the property of a spacetime in general relativity where a freely falling particle's or light ray's path ends after finite time, the standard definition of a singularity.
Geodesics in general relativity
In general relativity, a geodesic is the path a freely falling particle or light ray follows through curved spacetime: gravity appears not as a force but as geometry that determines which curves are straight.
Geodesics in the Kerr metric
Geodesics in the Kerr metric are the freely falling paths of particles and light around a rotating black hole, made fully integrable by the Carter constant.
Geodesy
Geodesy, also called Erdmessung or Geodetic Science, is the science of measuring the Earth's shape, orientation in space, and gravity field, and how they change.
Geodetic datum
A geodetic datum is a coordinate system with a reference surface (ellipsoid or sea level) anchoring latitude, longitude, and heights. Key US datums: NAD 83, NAVD 88, WGS 84, ITRF, and the coming NATRF2022 modernization.
Geodetic effect
The geodetic effect, also known as geodetic precession or de Sitter precession, is the general-relativistic precession of a gyroscope's spin axis moving through curved spacetime, predicted by Willem de Sitter in 1916.
Geodis
Geodis is a French international transport and logistics company, wholly owned by the SNCF Group since 2008, tracing its origins to 1904 and recording €11.3 billion in 2024 revenue.
Geoduck
Geoduck (Panopea generosa), pronounced gooey-duck, is the world's largest burrowing clam, native from Alaska to Baja California, with a 3-foot siphon, 168-year lifespan, major Washington wild dive fishery and aquaculture, exported mainly to China.
Geoengineering Model Intercomparison Project (GeoMIP)
The Geoengineering Model Intercomparison Project (GeoMIP) is an international project, started in 2010, that runs standardized climate model experiments to study solar geoengineering's effects and impacts.
GeoEye
GeoEye was an American commercial satellite imagery company headquartered in Dulles, Virginia, formed in 2006 and best known for GeoEye-1, then the highest-resolution commercial imaging satellite.