All articles starting with H
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Harmonic superspace
Harmonic superspace is an extension of ordinary superspace, adding harmonic variables on the sphere S², introduced in 1984 by Galperin, Ivanov, Kalitzin, Ogievetsky, and Sokatchev.
Harmonica
The harmonica, also called the mouth organ, is a free-reed wind instrument sounded by breathing into air channels; each channel gives a different note on inhaling and exhaling.
Harmonics (electrical power)
Power system harmonics are voltage or current components at integer multiples of the 50 or 60 Hz fundamental, produced by non-linear loads and measured as total harmonic distortion (THD).
HARMONIE-AROME
HARMONIE-AROME is a kilometer-scale, non-hydrostatic numerical weather prediction model for limited-area regional forecasting in which convection is treated explicitly, built on the shared ALADIN-HIRLAM code framework.
Harmonies poétiques et religieuses
Harmonies poétiques et religieuses (Poetic and Religious Harmonies) is a collection of 47 religious poems by Alphonse de Lamartine, published in Paris in 1830 and later inspiring Franz Liszt's piano cycle of the same name.
Harmonium
The harmonium is a hand-pumped reed organ, born in Europe but redesigned in India, central to qawwali, ghazal, thumri, and Hindi film song; India led production by 1915.
Harmonization of international emergency numbers
Harmonization of international emergency numbers is the effort to make codes like 112 and 911 work across national numbering plans, through ITU recommendations and EU mandates rather than a global registry.
Harmonization of pesticide regulation in Africa
Harmonization of pesticide regulation in Africa lets one pesticide registration dossier support legal sales in several African countries at once, led by the Sahel's CSP since 1994.
Harmonize
Harmonize, also known as Konde Boy, is a Tanzanian bongo flava singer born Rajabu Abdul Kahali in 1994, formerly signed to Diamond Platnumz's WCB Wasafi.
Harmonized System
The Harmonized System (HS) is the WCO's international six-digit goods classification under the 1988 HS Convention, used for tariffs, trade statistics, rules of origin, and negotiations; HS 2028, its eighth edition, takes effect 1 January 2028.
HarmonQuest
HarmonQuest is an American actual-play comedy series (2016-2019, 3 seasons, 30 episodes) created by Dan Harmon and Spencer Crittenden, in which comedians play Pathfinder before a studio audience with animated adventures; it began on Seeso and now streams on Crunchyroll.
Harmonthep Labyrinthus
Harmonthep Labyrinthus is a 363-km-wide labyrinth terrain of intersecting valleys in Titan's south polar region, named in 2017 after a Dune-series planet and formed by karst-like dissolution of organic plateaux.
Harmontown
Harmontown: 2014 Neil Berkeley documentary following Dan Harmon (Community, Rick and Morty) and his live podcast with Jeff B. Davis on a 20-city 2013 tour; SXSW premiere, 72% on Rotten Tomatoes; distinct from the podcast itself.
Harmony
Harmony in music is the simultaneous sounding of two or more pitches as intervals and chords, with practices organizing chord progressions. Founded as modern theory by Rameau's 1722 Traité; recent cross-cultural research finds melody, not harmony, drives global scale structure.
Harmony Biosciences Holdings, Inc.
Harmony Biosciences Holdings, Inc. is a pharmaceutical company in Plymouth Meeting, Pennsylvania, focused on rare neurological disorders and known for the narcolepsy drug WAKIX (pitolisant).
Harmony Cobel
Harmony Cobel (alias Mrs. Selvig) is a fictional character in Apple TV+'s Severance, played by Patricia Arquette. Former manager of Lumon's Severed Floor and, per Season 2, the true inventor of the severance procedure, credited to Jame Eagan.
Harmony Corruption
Harmony Corruption is Napalm Death's third album, released July 1, 1990 on Earache Records. Recorded at Morrisound, Tampa with Scott Burns, it added Greenway, Pintado, and Harris and bridged grindcore and death metal.
Harmony Energy
Harmony Energy is a UK-headquartered developer and operator of grid-scale battery storage systems built on Tesla Megapacks, which Swiss energy company Alpiq acquired 90 per cent of in 2026.
Harmony Intelligent Mobility Alliance (鸿蒙智行)
Harmony Intelligent Mobility Alliance (鸿蒙智行, HIMA) is a Huawei-led automotive alliance in China, upgraded from the Huawei Zhixuan model in November 2023 and spanning five vehicle brands.
Harmony Korine
Harmony Korine (born 1973, Bolinas, California) is an American filmmaker, screenwriter of Kids, director of Gummo, Julien Donkey-Boy, Spring Breakers, and the AI-made Aggro Dr1ft via his Miami collective EDGLRD; also a visual artist with Pompidou and ICA Miami exhibitions.
Harmony of the Seas
Harmony of the Seas is an Oasis-class cruise ship operated by Royal Caribbean International, built in Saint-Nazaire, France, and delivered in 2016 as the world's largest cruise ship.
Harmony search
Harmony search, also known as the harmony search algorithm, is a population-based metaheuristic optimization algorithm introduced in 2001, inspired by musical improvisation and applied to engineering design, scheduling, and machine learning tuning.
Harmony Secret (ดีลลับฉบับเล่นเล่ห์)
Harmony Secret (ดีลลับฉบับเล่นเล่ห์) is a 2025 Thai GL series by CHANGE2561 on One31, 8 episodes, starring Lookmhee and Sonya as rival heiresses bidding for a duty-free concession.
Harmony Society
The Harmony Society, also called the Harmonists or Rappites, was a German Pietist communal society founded by George Rapp in Pennsylvania in 1805, holding all property in common.
HarmonyCares
HarmonyCares, formerly U.S. Medical Management, is a physician-led provider of in-home primary care for older adults with complex needs, based in Troy, Michigan, which raised $200 million in 2024.
HarmonyOS
HarmonyOS, also known as HongMeng OS, is Huawei's operating system for phones, tablets, watches, cars, and other devices, launched in 2019 after US trade restrictions.
HarmonyOS 5
HarmonyOS 5, also known as HarmonyOS Next, is a mobile operating system developed by Huawei, launched in October 2024. It drops Android compatibility entirely, making it a third mobile operating system alongside Android and iOS.
Harmozeia/Armuzia
Harmozeia/Armuzia (Harmozaei), ancient coastal settlement in Carmania on the east side of the Strait of Hormuz, Iran, near the Minab river; visited by Nearchus in 324 BC, recorded by Arrian and Pliny.
Harmozike
Harmozike (Ἁρμοζική), also Armazi, Armazistsikhe, Hermastus, was the royal citadel of Caucasian Iberia on Bagineti hill at Mtskheta, Georgia, captured by Pompey in 65 BC and fortified with Roman help under Vespasian.
Harmy's Despecialized Edition
Harmy's Despecialized Edition, also called Star Wars Despecialized Editions, is Petr Harmáček's fan-made HD reconstruction of the original theatrical Star Wars trilogy, combining Blu-ray, LaserDisc, and 35mm scan sources; first released 2011, torrent-distributed, unaltered cuts.