All articles starting with M
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Machi City Site and Zhaowan Tomb Group
麻池城址和召湾墓群 (Machi City Site and Zhaowan Tomb Group), Han-era site in Baotou, Inner Mongolia; national key protection unit since 2006; Machi ancient city identified as Qin Jiuyuan/Han Wuyuan commandery seat and Qin Straight Road northern terminus, with over 100 excavated Han tombs at Zhaowan.
Machi-bikeshi
Machi-bikeshi (町火消, "town firefighters") were the commoner fire brigades of Edo during the Edo period, founded in 1718 and regarded as the origin of Japan's volunteer fire corps.
Machias Seal Island
Machias Seal Island: small disputed island in the Bay of Fundy claimed by both Canada and the United States, with a lighthouse manned since 1832, a 1944 migratory bird sanctuary hosting over 1,000 puffin pairs, and contested gray-zone lobster waters.
Machiavellianism (politics)
Machiavellianism in politics: a doctrine derived from Machiavelli's The Prince, meaning moral expediency, the divorce of politics from private morality, and justification of state-serving means; contrasts with Machiavelli's republicanism, Kautilya's precedent, and the dark triad trait.
Machiavellianism (psychology)
Machiavellianism, a personality trait of cold rationality, cynicism, duplicity, and strategic goal pursuit, was introduced by Christie and Geis in 1970 via the 20-item Mach-IV scale and forms part of the Dark Triad with narcissism and psychopathy; the Machiavellianism-psychopathy distinction remains contested.
Machida
Machida (町田市) is a city at Tokyo's southern tip, protruding into Kanagawa Prefecture. Incorporated February 1, 1958 as Tokyo's ninth city from four municipalities, it has about 430,000 residents, ranks third in Tokyo after the 23 wards and Hachioji, and serves as a rail-linked bedroom and commercial city.
Machida Squirrel Garden
Machida Squirrel Garden (町田リス園) is a Tokyo animal park opened in 1988 where 200+ free-roaming Formosan squirrels are hand-fed sunflower seeds; it doubles as a nonprofit employment support facility staffed by 20 workers with disabilities.
Machiko Soga (曽我町子)
Machiko Soga (曽我町子, Soga Machiko, 1938–2006) was a Japanese voice actress from Hachioji, Tokyo, the defining tokusatsu villainess, voiced Q-tarō, Bandora, Queen Hedrian, and Rita Repulsa's Japanese source role.
Machilidae
Machilidae, jumping bristletails, is a family of primitively wingless Archaeognatha insects with about 458 species in three subfamilies, mostly Northern Hemisphere, known for thread-based sperm transfer, jumping, and disputed paraphyly.
Machilipatnam (మచిలీపట్నం)
Machilipatnam (మచిలీపట్నం), historically Masulipatnam, is a coastal town in Krishna district, Andhra Pradesh, at the Krishna River mouth; a premier Coromandel trading port in the 1500s–1700s, home of Kalamkari textiles, now building a greenfield deep-water port.
Machimoi
The machimoi (μάχιμοι, "warriors") were native Egyptian soldiers of low rank, attested in Late Period Egypt (664–332 BC) and increasingly prominent in the Ptolemaic army, where 20,000 fought at Raphia in 217 BC.
Machina: Aranea Alba Editio
Machina: Aranea Alba Editio (Aranea Alba Edition) is a 2025 Smashing Pumpkins box set uniting Machina and Machina II into an 80-song (48+32) remixed, resequenced collection, sold exclusively via Madame Zuzu's as an 8-LP vinyl set, later a 5-CD set.
Machina/The Machines of God
Machina/The Machines of God is The Smashing Pumpkins' fifth studio album, released February 29, 2000 on Virgin. A Flood-produced concept album about rock star Zero becoming Glass, it was the original lineup's last record, paired with the free internet release Machina II, and reissued in 2025.
Machinability
Machinability is the ease with which a material can be cut to a desired surface finish; it is judged by tool wear, cutting forces, chips, and surface integrity.
Machine
A machine is an assemblage of parts that transmits forces, motion, and energy to transform power into useful work, ranging from the six simple machines to automated production lines.
Machine (2017 film)
Machine (2017) is a Hindi romantic thriller directed by Abbas-Mustan, starring debutant Mustafa Burmawalla (Abbas's son) and Kiara Advani, released 17 March 2017; it holds a 0% Rotten Tomatoes score and 2.8/10 on IMDb.
Machine code
Machine code, also called machine language, is the set of binary instructions a computer's processor executes directly, making it the only form of program a CPU can run without translation.
Machine de Marly
The Machine de Marly, also known as the Marly Machine, was a giant hydraulic pumping installation on the Seine built in 1681–1684 to feed the fountains of Versailles.
Machine embroidery
Machine embroidery is the process of decorating fabric with thread using an embroidery machine, most often a computerized machine that follows a digitized design file to place stitches without a human guiding the needle.
Machine epsilon
Machine epsilon is the smallest positive number that, when added to 1.0 in a floating-point system, produces a result different from 1.0, measuring the system's precision.
Machine gun
A machine gun is a repeating firearm that loads, fires, and ejects cartridges automatically, first built by Hiram Maxim in 1884 and central to twentieth-century warfare.
Machine Gun Kelly (gangster)
Machine Gun Kelly, born George Kelly Barnes (1895 or 1897–1954), was an American Prohibition-era bootlegger, bank robber, and kidnapper who abducted oilman Charles Urschel in 1933, was captured in Memphis, and served at Alcatraz.
Machine Gun Kelly (musician)
Machine Gun Kelly (mgk), Colson Baker, born 1990, Cleveland rapper turned pop-punk rocker; Tickets to My Downfall (2020) and Mainstream Sellout (2022) both hit No. 1 on the Billboard 200; seventh album Lost Americana (2025).
Machine Gun Preacher
Machine Gun Preacher is a 2011 biographical action drama directed by Marc Forster, starring Gerard Butler as Sam Childers, the Pennsylvania ex-con preacher who founded the Angels of East Africa orphanage in Nimule, South Sudan, and fought the LRA; based on his memoir Another Man's War.
Machine Head (album)
Machine Head (album) is Deep Purple's 1972 sixth studio album, recorded in Montreux after a fire destroyed the Montreux Casino. It reached #1 in the UK and #7 on the Billboard 200, selling two million US copies and launching "Smoke on the Water".
Machine Head (band)
Machine Head (マシーン・ヘッド), Oakland groove/thrash metal band formed in 1991 by ex-Vio-lence guitarist Robb Flynn; Burn My Eyes (1994) sold 500,000+, eleven albums through UNATØNED (2025) on Nuclear Blast.
Machine learning
Machine learning is the branch of computer science concerned with building computers that improve automatically through experience, drawing on statistics and spanning supervised, unsupervised, and reinforcement learning.
Machine Learning Algorithms
Machine learning algorithms: procedures by which computer systems learn from data to improve accuracy, grouped into supervised, unsupervised, and reinforcement learning; examples include regression, random forests, SVMs, neural networks, and XGBoost.
Machine learning collective variables
Machine learning collective variables are low-dimensional functions of a molecular system's atomic coordinates, learned from simulation data rather than chosen by hand, used mainly to guide enhanced sampling.
Machine learning earthquake detection
Machine learning earthquake detection uses trained neural networks to find earthquake signals in seismic recordings and pick P and S wave arrival times, replacing manual analysis.