All articles starting with F
15,892 articles
Fatwa (فتوى)
A fatwa (فتوى) is a non-binding advisory ruling on Islamic law issued by a qualified mufti in answer to a question, distinct from a qadi's binding judgment and derived through ijtihad.
Fatwas and letters of Sidi al-Mukhtar al-Kunti
The fatwas and letters of Sidi al-Mukhtar al-Kunti are the legal opinions and correspondence of the Kunta Qadiriyya shaykh al-Kabir (1729–1811), continued by his son and grandson until 1847.
Fauda (فوضى)
Fauda (فوضى, "chaos") is an Israeli action thriller created by Lior Raz and Avi Issacharoff, premiering on yes on 15 February 2015. It follows undercover Mista'arvim agents pursuing Hamas operatives, streams globally on Netflix, and has reached Netflix top 10 charts in Arab countries.
Fauj-i Ain
The Fauj-i Ain (ਫ਼ੌਜ-ਏ ਆਇਨ) was the regular drilled army of the Sikh Empire, built from 1822 by Maharaja Ranjit Singh with Napoleonic veterans and dissolved in 1849.
Fauja Singh (ਫੌਜਾ ਸਿੰਘ)
Fauja Singh (ਫੌਜਾ ਸਿੰਘ), the Turbaned Tornado, British Sikh marathon runner (1911–2025) who began at 89, ran nine marathons, and at 100 finished the 2011 Toronto Waterfront Marathon, the first recorded centenarian marathoner, though never Guinness-certified for lack of a birth certificate.
Faujasite
Faujasite is a rare natural zeolite mineral whose FAU framework, the most open of any natural zeolite, is shared with synthetic zeolites X and Y, used in catalysis.
Faulhaber
Faulhaber, formally Dr. Fritz Faulhaber GmbH & Co. KG, is a German manufacturer of miniature and micro drive systems founded in 1947 and headquartered in Schönaich near Stuttgart.
Faulkner County
Faulkner County, Arkansas; seat Conway; county formed April 12, 1873 from Conway and Pulaski counties, named for Colonel Sandy Faulkner of "The Arkansas Traveler"; 123,498 residents in 2020, about 134,000 in 2025, among the state's fastest-growing counties.
Fault (geology)
A fault is a fracture in rock along which the two sides have moved relative to each other, and it is the primary source of earthquakes.
Fault current limiter
A fault current limiter (FCL) is an electrical device that stays invisible during normal operation and rapidly limits the surge of current during a short-circuit fault.
Fault detection and classification
Fault detection and classification (FDC) is a semiconductor manufacturing technique that monitors equipment sensor data in real time, detecting abnormal process conditions so engineers can intervene before yield is lost.
Fault injection
Fault injection is a testing technique that deliberately introduces faults into hardware or software systems to observe how they respond, used to validate fault-tolerant designs and measure dependability.
Fault level
Fault level is the prospective current that would flow into a short circuit at a point in a power system, expressed in kiloamperes or megavolt-amperes.
Fault model
A fault model is a formal description of how physical defects in an integrated circuit behave at the logic level, used to generate test patterns and measure fault coverage.
Fault passage indicator
A fault passage indicator (FPI), also called a faulted circuit indicator, is a device on medium-voltage distribution lines that detects fault current, helping crews localize the faulted section.
Fault scarp
A fault scarp is a step in the ground surface caused by slip on a fault, formed when earthquake rupture breaks through to the surface, and serves as primary evidence of past earthquakes.
Fault simulation
Fault simulation is a digital circuit testing method that injects modeled faults, usually stuck-at, into a circuit design and simulates its behavior to measure how well test vectors detect them.
Fault tolerance
Fault tolerance is the ability of a system to continue running correctly when components fail, achieved by building in redundancy so no single failure interrupts operation.
Fault tree analysis
Fault tree analysis, also called failure tree analysis, is a deductive risk analysis method that links an undesired top event to combinations of component failures using Boolean logic gates.
Fault-based grounds for divorce
Fault-based grounds for divorce are legally specified acts of marital misconduct, such as adultery, cruelty, or desertion, that a spouse must plead and prove, unlike no-fault grounds.
Fault-tolerant control
Fault-tolerant control (FTC) is a control engineering approach that keeps systems stable and performing acceptably when sensors, actuators, or components fail, either through robust design or online reconfiguration.
Fault-tolerant quantum computation
Fault-tolerant quantum computation (FTQC) designs quantum computers so arbitrarily long computations run accurately despite noisy qubits, gates, and measurements, combining error-correcting codes with the threshold theorem.
Faun
Faun, Roman woodland spirit derived from the god Faunus, goat-legged and horned, distinct from the Greek horse-tailed satyr of Dionysus; the two merged through Roman syncretism, Pan's iconography, and Renaissance art.
Fauna
Fauna is the animal life of a particular region or time, the counterpart of flora. Covers faunal scope layers, Linnaean naming, survey and genetic methods, and conservation status scales.
Fauna Hodel
Fauna Hodel was an American author and motivational speaker known for her 2008 memoir, One Day She'll Darken. It details her connection to Dr. George Hodel.
Fauna of Australia
Fauna of Australia: the continent's native animals, defined by Gondwanan isolation, marsupial dominance (over 70% of world species), monotremes, high endemism (83% of mammals), and a severe extinction and threatened-species record under the EPBC Act.
Fauna of India
Fauna of India: the animal life of India, documented by the Zoological Survey of India (est. 1 July 1916) through the Fauna of India publication series, the National Zoological Collection of over a million specimens, and 16 regional centres.
Fauna of Louisiana
The fauna of Louisiana, also known as its wildlife, is the animal life of the subtropical state, from black bears in bottomland forests to Gulf fisheries worth about $1 billion a year.
Fauna of the United States
Fauna of the United States: animal life of the US, also called American wildlife. 1,590 terrestrial vertebrate species modeled by USGS GAP; 40% of animals at extinction risk per NatureServe; governed by the Endangered Species Act and Migratory Bird Treaty Act.
Fauna Zoo
Fauna Zoo (Tierpark Fauna) is a nonprofit wildlife park in Solingen-Gräfrath, Germany, founded 1932, holding about 300 animals in 80 species on roughly 3 hectares; distinct from a Mölndal pet shop and a Mexico City zoo of the same name.