All articles starting with F
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Forbidden line
A forbidden line is an emission line from an atomic transition that violates electric-dipole selection rules, visible in rarefied astronomical gas such as nebulae and the solar corona.
Forbidden Planet
Forbidden Planet (1956) is MGM's first major science fiction film, directed by Fred M. Wilcox from Cyril Hume's screenplay, a loose Tempest transposition set on Altair IV with Robby the Robot and the first all-electronic film score.
Forbidden Planet (retail chain)
Forbidden Planet, also known as Forbidden Planet Bookshop, is a British specialty retail chain selling comics, manga, and science fiction merchandise, founded in London in 1978 with about 18 stores.
Förbifart Stockholm
Förbifart Stockholm, or Stockholm bypass, is a 21-kilometer E4 motorway being built west of Stockholm, about 18 kilometers in tunnel, to relieve the Essingeleden, opening fully in 2030.
Forbion
Forbion is a Dutch life sciences venture capital firm based in Naarden, Netherlands, investing in human health and bioeconomy companies with €5 billion under management.
Forbush decrease
A Forbush decrease is a short-term reduction in galactic cosmic rays at Earth caused by coronal mass ejections, named for physicist Scott Forbush, who reported it in 1937.
Forca Kochi FC
Forca Kochi FC, also registered as Kochi Forca FC, is a Super League Kerala franchise football club in Kochi, India, owned by Prithviraj Sukumaran and Supriya Menon; runner-up in the inaugural 2024 SLK season.
Forcado
Forcado (Forçado, Juego de las Donzellas) is a medieval chess variant with compulsory captures, recorded in Alfonso X's Libro de los Juegos (Seville, 1283); legend credits maidens of Morocco, and capture follows a King-to-Pawn ranking.
Forcados Oil Terminal
The Forcados Oil Terminal is a Nigerian crude oil export terminal in the western Niger Delta, commissioned by Shell in 1971 to load the Forcados Blend grade.
Forcados Yokri Oil and Gas Field
Forcados Yokri is an oil and gas field in the Niger Delta of Nigeria, operated by Shell and among the largest in the NNPC/Shell joint venture.
Force
Force, also called a force vector, is a push or pull on an object with a specific magnitude and direction; its SI unit is the newton (N).
Force (फ़ोर्स) (2011 film)
Force (फोर्स) is a 2011 Hindi action thriller directed by Nishikant Kamat, a remake of the Tamil film Kaakha Kaakha, starring John Abraham as NCB officer ACP Yashvardhan, with Genelia D'Souza and Vidyut Jammwal, released 30 September 2011.
Force 10 from Navarone (film)
Force 10 from Navarone is Guy Hamilton's 1978 WWII action film, a sequel to The Guns of Navarone based on Alistair MacLean's 1968 novel, starring Robert Shaw, Harrison Ford, and Barbara Bach on a Yugoslav mission.
Force 136
Force 136 was the Far East branch of Britain's Special Operations Executive during World War II, gathering intelligence and supporting resistance in Japanese-occupied Asia from 1941.
Force 2
Force 2 (फोर्स २) is a 2016 Hindi action thriller, sequel to Force (2011), directed by Abhinay Deo, starring John Abraham, Sonakshi Sinha, and Tahir Raj Bhasin as a RAW mole; it earned ₹35.74 crore net in India and was a flop.
Force between magnets
The force between magnets is the attraction or repulsion two permanent magnets exert on each other: like poles repel, opposite poles attract, and the force weakens sharply with distance.
Force carrier
A force carrier, also called an exchange particle, is an elementary particle whose exchange between matter particles transmits a fundamental force, such as the photon or gluon.
Force chain
A force chain is a quasi-linear arrangement of three or more grains in a granular material, such as sand, that carries more than the average contact force, forming the load-bearing skeleton transmitting stress.
Force closure (grasping)
Force closure in robotic grasping is the property that a set of contacts can balance any external wrench, with each contact force obeying friction and unilateral constraints.
Force Concept Inventory
The Force Concept Inventory (FCI) is a multiple-choice test measuring students' conceptual understanding of Newtonian mechanics, created by David Hestenes and colleagues at Arizona State University and published in 1992.
Force constant
The force constant, written k, is the second derivative of a bond's potential energy at equilibrium, measuring bond stiffness and setting its vibrational frequency in infrared spectroscopy.
Force distribution problem
The force distribution problem in robotics is choosing contact forces and joint torques for a grasping or multi-legged robot so it stays in equilibrium within friction and torque limits.
Force field (chemistry)
In chemistry, a force field is the set of mathematical functions and fitted parameters describing a system's potential energy, used in molecular mechanics and molecular dynamics simulations.
Force field parameterization
Force field parameterization, also called ligand parameterization, is the process of fitting molecular mechanics parameters such as charges, bond lengths, and torsional barriers to quantum-mechanical or experimental reference data.
Force Gurkha
The Force Gurkha, also called the Force Motors Gurkha, is a four-wheel-drive off-road SUV from Force Motors of Pune, India, styled after the Mercedes-Benz Gelandewagen and offered in 3-door and 5-door versions.
Force India
Force India, a Silverstone-based Formula One team (2008–2018), founded by Vijay Mallya and Michiel Mol from Spyker, later Sahara Force India, fourth in 2016, sold to Lawrence Stroll in 2018, becoming Racing Point then Aston Martin.
Force Infinite (原力无限)
Force Infinite (原力无限) is a Chinese embodied-AI startup founded in 2023 and headquartered in Hangzhou by former Alibaba vice president Bai Huiyuan, which develops the AtomBrain embodied brain software and a family of robots.
Force majeure
Force majeure: contract clauses and civil law doctrines excusing performance for extraordinary events beyond a party's control. Contrasts with common law impossibility, impracticability, and frustration; codified in CISG Article 79 and UNIDROIT 7.1.7.
Force Majeure (film)
Force Majeure (Turist) is Ruben Östlund's 2014 Swedish comedy-drama about a father, Tomas, who flees a controlled avalanche at a French Alps resort, abandoning his family; it won the Cannes Un Certain Regard Jury Prize and the European Film Award for Best Film.
Force manipulability ellipsoid
The force manipulability ellipsoid is a robotics descriptor, introduced by Tsuneo Yoshikawa in the 1980s, showing the forces a manipulator can exert for a given joint configuration.