All articles starting with G
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Gametogenesis
Gametogenesis is the formation of gametes, sperm via spermatogenesis and eggs via oogenesis, through meiosis in the gonads; it differs from mitosis and underlies fertility, aneuploidy, and emerging in vitro gametogenesis research.
Gametophyte
Gametophyte: the haploid, gamete-producing multicellular generation of plants, alternating with the diploid sporophyte. Dominant in bryophytes, independent in ferns and lycophytes, reduced to a few cells in seed plants such as pollen.
Gametophyte body plans in bryophytes
In bryophytes the photosynthetic gametophyte is the dominant plant, taking one of two body plans: a flattened thallus or a cylindrical leafy shoot, as in mosses.
Gametophytes and reproduction of filmy ferns
The gametophytes of filmy ferns are persistent, branching ribbons that clone themselves through gemmae, allowing colonies to persist indefinitely in constantly wet habitats without completing a life cycle.
Gameunsa
Gameunsa (감은사) was a Unified Silla Buddhist temple on the coast of Gyeongju, South Korea, begun by King Munmu and completed by his son Sinmun in 682.
Gamification
Gamification: use of game design elements (points, badges, leaderboards) in non-game contexts such as education, marketing, and health; term from the digital media industry, first documented 2008; distinct from serious games; effects depend on design quality.
Gamilat
Gamilat, also Gamilath, was a queen of the Nabataeans, sister of the last king Rabbel II, named on coins struck at Petra around 70 to 106 CE.
Gaming computer
Gaming computer (gaming PC): a personal computer with a dedicated GPU, powerful CPU, 16–32 GB RAM, NVMe SSD, and enhanced cooling for high-frame-rate gaming; desktops, laptops, and mini systems; $700–$3,000+ market growing to $130 billion by 2030.
Gaming Historian
Gaming Historian is Norman Caruso's YouTube documentary series on video game history, running from 2008 to its April 2026 farewell, with about 1.1 million subscribers, 145 videos, and a donated trove of Universal v. Nintendo court documents.
Gamla Ullevi
Gamla Ullevi: football stadium in Gothenburg, Sweden, opened 5 April 2009; home of IFK Göteborg, GAIS, and Örgryte IS; capacity 18,454; former Sweden women's national arena; vibration problems and rebuild debate.
Gamla Uppsala
Gamla Uppsala, also known as Old Uppsala, is a village and archaeological site just north of Uppsala, Sweden, famous for its three Royal Mounds and its role as a late Iron Age center.
Gamma (app)
Gamma is a web-based AI platform, founded in 2020 by three former Optimizely employees, that generates presentations, documents, and webpages from prompts or pasted files.
Gamma (media company)
Gamma is an American music and media company launched in 2023 by Larry Jackson and Ike Youssef, whose roster has included Usher, Rick Ross, and Mariah Carey.
Gamma (γάμμα)
Gamma (γάμμα, Γ γ) is the third letter of the Greek alphabet, from Phoenician gimel ("camel"), numeral value 3, [g] in Ancient Greek, ancestor of Latin C and G, and a common scientific symbol.
GAMMA 10 (tandem mirror)
GAMMA 10 is a tandem mirror plasma confinement device at the University of Tsukuba, Japan, the world's largest, operating since 1983 for controlled nuclear fusion research.
Gamma Aquilae
Gamma Aquilae, better known by its proper name Tarazed, is an orange bright giant star in Aquila and the constellation's second brightest star after Altair, about 395 light-years away.
Gamma camera (γ-camera)
The gamma camera, also called the Anger camera, is an imaging device that detects gamma rays from radioactive tracers inside the body; Hal Anger invented it in 1957.
Gamma Cassiopeiae
Gamma Cassiopeiae (Gamma Cas, Tsih) is a Be star at the center of Cassiopeia's W, prototype of a class with unusual X-rays from a white dwarf companion.
Gamma Cassiopeiae variable
A Gamma Cassiopeiae variable (GCAS) is an eruptive irregular variable star of spectral class B, named for Gamma Cassiopeiae, whose irregular brightness changes come from a gas disk.
Gamma Cephei
Gamma Cephei (γ Cep) is a binary star system about 45 light-years away in Cepheus whose primary star hosts one of the first discovered exoplanets.
Gamma correction
Gamma correction, also called the gamma curve, applies a nonlinear power-law transfer function between linear light intensity and encoded pixel values so that display decoding cancels the encoding.
Gamma Cygni
Gamma Cygni, known by its proper name Sadr, is a yellow-white supergiant of magnitude 2.23 at the center of the Northern Cross asterism in Cygnus, about 1,800 light-years away.
Gamma cyhalothrin
Gamma cyhalothrin (CAS 76703-62-3), the S,R isomer of lambda-cyhalothrin, is a synthetic pyrethroid insecticide about twice as potent, applied at half the rate, IRAC Group 3A, EU-approved 2015.
Gamma decay
Gamma decay is the emission of high-energy photons by an excited atomic nucleus dropping to a lower-energy state, leaving its proton and neutron numbers unchanged.
Gamma distribution
The gamma distribution is a continuous probability distribution for positive random variables defined by shape and scale parameters; it is used as a lifetime model and Bayesian prior.
Gamma Doradus variable
A Gamma Doradus variable is a main-sequence star of late-A to early-F type that pulsates in gravity modes, varying by up to 0.1 magnitude over 0.4 to 3 days.
Gamma Draconis
Gamma Draconis, also known as Eltanin, is an orange giant about 154.3 light-years away and the brightest star in Draco, the star Bradley used to discover the aberration of light in 1728.
Gamma Equulei
Gamma Equulei is a strongly magnetic Ap star in the constellation Equuleus, rotating once in about 97 years and pulsating as a roAp star every 12 minutes.
Gamma ferric oxide
Gamma ferric oxide, also called maghemite, is a magnetic iron oxide that coated nearly all analog audio and video tape from the late 1940s until the early 1970s.
Gamma function
The gamma function, or Γ function, is a mathematical function extending the factorial to complex numbers, so Γ(z) = (z − 1)! for positive integers; Euler introduced it in 1729.