F2, F.II or similar may refer to:

Science and mathematics

* F₂, the chemical formula for

fluorine Fluorine is a chemical element; it has Chemical symbol, symbol F and atomic number 9. It is the lightest halogen and exists at Standard temperature and pressure, standard conditions as pale yellow Diatomic molecule, diatomic gas. Fluorine is extre ...

\mathbb F_2

GF(2) (also denoted \mathbb F_2, or \mathbb Z/2\mathbb Z) is the finite field with two elements. is the Field (mathematics), field with the smallest possible number of elements, and is unique if the additive identity and the multiplicative identity ...

, in mathematics, the Galois field of two elements * F2, a category in the

Fujita scale The Fujita scale (F-Scale; ), or Fujita–Pearson scale (FPP scale), is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation. The official Fujita scale category is determ ...

of tornado intensity * F2 hybrid, a type of crossing in classical genetics *

F2 layer The F region of the ionosphere is home to the F layer of ionization, also called the Appleton–Barnett layer, after the English physicist Edward Appleton and New Zealand physicist and meteorologist Miles Barnett. As with other ionospheric secto ...

, a stratum of the Earth's ionosphere * F-2 mycotoxin or zearalenone, a chemical produced by fungi *

NIST-F2 NIST-F2 is a caesium fountain atomic clock that, along with NIST-F1, serves as the United States' primary time and frequency standard. NIST-F2 was brought online on 3 April 2014. Accuracy NIST-F1, a cesium fountain atomic clock used since 1999 ...

, an atomic clock

Motorsports

Formula Two Formula Two (F2) is a type of Open-wheel car, open-wheel formula racing category first codified in 1948. It was replaced in 1985 by Formula 3000, but revived by the FIA from 2009 FIA Formula Two Championship season, 2009 to 2012 FIA Formula Two C ...

, a type of open-wheel formula racing category first codified in 1948. *

FIA Formula 2 Championship The FIA Formula 2 Championship (F2) is a second-tier single-seater championship organized by the Fédération Internationale de l'Automobile (FIA). Held on road racing, racing circuits, the championship was introduced in 2017, following the re ...

, a second-tier

single-seater An open-wheel car is a car with the wheels outside the car's main body, and usually having only one seat. Open-wheel cars contrast with street cars, sports cars, stock cars, and touring cars, which have their wheels below the body or inside fend ...

championship held from 2009 to 2012. *

, a second-tier

championship held since 2017.

Medicine

* F2 or Foundation Year 2, part of the UK Foundation Programme for postgraduate medical practitioners *

F-2 (drug) F-2, also known as 6-(2-aminopropyl)-5-methoxy-2-methyl-2,3-dihydrobenzofuran or as benzofuran-2-methyl-5-methoxy-6-(2-aminopropane), is a lesser-known psychedelic drug. F-2 was first synthesized by Alexander Shulgin. In his book '' PiHKAL'', th ...

, a psychedelic drug * F2-isoprostane, a compound formed ''in vivo'' from fatty acids *

F2 gene Prothrombin (coagulation factor II) is encoded in the human by the F2-gene. It is proteolytically cleaved during the clotting process by the prothrombinase enzyme complex to form thrombin. Thrombin (Factor IIa) (, fibrose, thrombase, thromb ...

, present on human chromosome 11, encodes for thrombin

Films

*'' F2: Fun and Frustration'', a 2019 Indian Telugu language film starring Venkatesh and Varun Tej

Technology

* , a

function key A function key is a key on a computer or computer terminal, terminal computer keyboard, keyboard that can be programmed to cause the operating system or an application program to perform certain actions, a form of soft key. On some keyboards/com ...

on a computer keyboard * F2 or

flat twin engine A flat-twin engine is a two-cylinder internal combustion engine with the cylinders on opposite sides of the crankshaft. The most common type of flat-twin engine is the boxer-twin engine, where both pistons move inwards and outwards at the same ti ...

, a type of two-cylinder internal combustion engine *

Anik F2 Anik may refer to: * Anik (satellite), satellites launched by Canadian telecommunications company Telesat * Anik, Iran, a village in South Khorasan Province, Iran * Anik Mountain * Anik Bissonnette, a Canadian ballet dancer * Anik Jean (born 1977) ...

, a Canadian geostationary communications satellite *

Nikon F2 The Nikon F2 is a professional-level, interchangeable lens, 35mm format, 35 mm film, single-lens reflex (SLR) camera. It was manufactured by the Japanese optics company Nippon Kogaku K. K. (Nikon Corporation since 1988) in Japan from September 1 ...

, a professional SLR camera

Transportation

Aviation

Fly Air Fly Air () was a private airline based in Istanbul, Turkey. Originally a charter airline, it also operated scheduled services. The airline ceased operations in January 2007.Flight International 3 April 2007 History Fly Air was established ...

, IATA designator F2, a Turkish private airline *

Fieseler F2 Tiger The Fieseler F2 Tiger was a German single-seat aerobatic biplane which was flown to victory in the 1934 World Aerobatics Competition (WAC) by its designer/builder Gerhard Fieseler. Design and development Gerhard Fieseler started his own compan ...

, a German single-seat aerobatic biplane * Flanders F.2, a 1911 British experimental single-seat monoplane aircraft *

Fokker F.II The Fokker F.II was the first of a long series of commercial aircraft from the Fokker Aircraft Company, flying in 1919. In a biplane age, it presented a distinct clean, high-wing monoplane style that sold successfully across Europe and North Amer ...

, a 1919 German early airliner * Metropolitan-Vickers F.2, a 1941 British early turbojet engine

Rail

EMD F2 The EMD F2 was a freight-hauling diesel locomotive built by General Motors Electro-Motive Division between July 1946 and November 1946. It succeeded the FT model in GM-EMD's F-unit sequence, and was replaced in turn by the F3. The F2 was in ...

, a class of GM diesel freight locomotive built in 1946 * H&BR Class F2, a class of 0-6-2T steam locomotives of the Hull and Barnsley Railway

Road

* Alta F2, a 1952 British racing car *

DKW F2 The DKW F2, firstly marketed as "DKW Meisterklasse", is a front wheel drive economy car produced by Auto Union's DKW division from 1932 to 1935 at the company’s Zwickau plant. It was launched at the Berlin Motor Show in April 1932. It shared its ...

, a 1930s German small car * Marussia F2, a Russian large luxury car

Boat

* F2, the Sydney Ferries' services to Taronga Zoo

Military

Air

* Beechcraft F-2 Expeditor, an American twin engine reconnaissance aircraft * Blackburn F.2 Lincock, a 1928 British single-seat lightweight fighter * Bristol F.2 Fighter, a 1916 British two-seat biplane fighter and reconnaissance aircraft *

Dassault Mirage F2 The Dassault Mirage F2 was a French prototype two-seat ground attack/fighter aircraft, which was designed to serve as a test bed for the SNECMA TF306 turbofan engine. The F2 also influenced the subsequent Dassault Mirage G, a variable geometry ...

, a 1960s French prototype two-seat attack fighter * Fairey F.2, a 1917 British fighter prototype * Felixstowe F.2, a 1917 British First World War flying boat * Hunter F 2, a 1953 Hawker Hunter fighter aircraft variant *

Lübeck-Travemünde F.2 The Lübeck-Travemünde F.2 was a 1910s German reconnaissance floatplane. The F.2 was an improved version of the company's earlier Lübeck-Travemünde F.1, F.1 floatplane and was the first armed aircraft built by Flugzeugwerft Lübeck-Travemünd ...

, early German reconnaissance floatplane * McDonnell F-2 Banshee, a carrier-based jet fighter aircraft of the 1950s *

Mitsubishi F-2 The Mitsubishi F-2 is a multirole fighter derived from the General Dynamics F-16 Fighting Falcon, and manufactured by Mitsubishi Heavy Industries and Lockheed Martin for the Japan Air Self-Defense Force, with a 60/40 split in manufacturing betw ...

, a Japanese fighter aircraft, based on the F-16 Fighting Falcon *

RAF Tornado F2 The Panavia Tornado Air Defence Variant (ADV) is a long-range, twin-engine swing-wing interceptor aircraft developed by the European Panavia Aircraft GmbH consortium. It was a specialised derivative of the multirole Panavia Tornado. Developme ...

, a long-range, twin-engine swing-wing interceptor *

F 2 Hägernäs Roslagen Air Corps (), also F 2 Hägernäs, or simply F 2, is a former Swedish Air Force air corps with the main base located on the east coast of Sweden just north of the capital Stockholm. History From 1919 the area was used for flight training ...

, a former Swedish Air Force wing

Sea

* , an F class First World War submarine of the Royal Navy * , a 1910s F-class submarine of the United States Navy *

20 mm modèle F2 gun The 20 mm modèle F2 gun is a naval defence weapon used by the French Navy The French Navy (, , ), informally (, ), is the Navy, maritime arm of the French Armed Forces and one of the four military service branches of History of France, ...

, a French naval gun

Land

* F2 81mm Mortar, an Australian weapon *

FR F2 sniper rifle The FR F2 (; ) has been the standard sniper rifle of the French military since 1986. It is designed for shooting at point targets at distances up to 800 metres. History In August 2018, a tender was released by the French government for a replacem ...

, the standard sniper rifle of the French military * KMW F2, a German modular wheeled armoured vehicle

Other uses

* F2 (classification), a wheelchair sport classification * F-2 visa, a U.S. visa type for dependents of students *

F2Freestylers The F2Freestylers, also known as the F2, are a British freestyle football duo comprising former amateur footballers Billy Wingrove and Jeremy Lynch. They are best known for their YouTube channel which has over 14 million subscribers. Early c ...

, British freestyle football duo also known as The F2 * F2 Logistics, Filipino logistics company **

F2 Logistics Cargo Movers The F2 Logistics Cargo Movers was a professional women's volleyball club that played in the Philippine Super Liga (PSL) and the Premier Volleyball League (PVL). The team was owned by F2 Logistics Philippines, Inc. History Philippine Superliga ...

, volleyball team owned by the logistics company of the same name *

, a type of open-wheel racing * F2, the second

formant In speech science and phonetics, a formant is the broad spectral maximum that results from an acoustic resonance of the human vocal tract. In acoustics, a formant is usually defined as a broad peak, or local maximum, in the spectrum. For harmo ...