F is the sixth letter of the Latin alphabet.
F may also refer to:
Science and technology
Mathematics
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F or f, the number 15 in hexadecimal and higher positional systems
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p F q, the hypergeometric function
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F-distribution, a continuous probability distribution
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f, SI prefix femto, factor 10−15
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, Fibonacci number
Computing and engineering
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F (programming language), a subset of Fortran 95
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F Sharp (programming language), a functional and object-oriented language for the .NET platform.
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F* (programming language), a dependently typed functional language for the .NET platform.
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F-measure, the harmonic mean of precision and recall
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f, in programming languages often used to represent the floating point
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F connector, used for inlet in cable modems
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F crimp, a type of solderless electrical connection
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F band (NATO), a radio frequency band from 3 to 4 GHz
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F band (waveguide), a millimetre wave band from 90 to 140 GHz
Physics
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°F, degree on the Fahrenheit temperature scale
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F, for farad, a unit for electric capacitance
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or ℱ, the Faraday constant
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, focal length of a lens
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f-number (sometimes called f-ratio, f-stop, or written f/), the focal length divided by the aperture diameter
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, , , force
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, frequency
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F (or A), Helmholtz Free Energy
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F, the electromagnetic field tensor in electromagnetism
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: Often generalized to include the field tensors of other interactions, as in i.e. the gluon field strength tensor.
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F region, part of the ionosphere
Chemistry
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Fluorine, symbol F, a chemical element
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f-block, a block of elements in the periodic table of elements
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F (or Phe), abbreviation for compound phenylalanine
Biology
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Form (botany)
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Form (zoology)
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Bioavailability, which is expressed as the letter "F" in medical chemistry equations
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Haplogroup F (Y-DNA), a patrilineal haplogroup
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Haplogroup F (mtDNA), a matrilineal haplogroup
Music
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F (musical note)
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F major, a scale
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F minor, a scale
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F major chord, Chord names and symbols (popular music)
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f, Forte (music)
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F (album), an album by Japanese singer Masaharu Fukuyama
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F Album, an album by Japanese duo KinKi Kids
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"F", song on the double A-side single "Tsume Tsume Tsume/F" by Japanese metal band Maximum the Hormone
Transport
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F Sixth Avenue Local, a rapid transit service of the New York City Subway
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F (S-train), trains on the ring line of Copenhagen's commuter train network
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F Market & Wharves, a heritage streetcar line operated by the San Francisco Municipal Railway
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Tokyo Metro Fukutoshin Line, a subway service operated by the Tokyo Metro, labeled
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The NYSE ticker symbol of the Ford Motor Company
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, the official West Japan Railway Company service symbol for the Osaka Higashi Line.
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Ford F-Series, a series of full-size pickup trucks from Ford Motor Company
Military
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F, a class of designation in the United States military aircraft designation systems which stands for "Fighter"
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F, a common designation for fighter aircraft
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Foxtrot, the military time zone code for UTC+06:00
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F band (NATO), a radio frequency band from 3 to 4 GHz
Other uses
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F (film), a 2010 film directed by Johannes Roberts
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France, on the vehicle registration plates of the European Union
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F (grade), a failing grade
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f, the symbol used in the International Phonetic Alphabet for the voiceless labiodental fricative
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f, common abbreviation in lexicons meaning feminine grammatical gender
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Fax, referring to a facsimile machine
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F, abbreviation for fax number
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The citation abbreviation of the Federal Reporter
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F, Fujitsu's mobile phones in Japan
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Forward position in Australian Rules football
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"F" or "F***", sometimes used to censor "fuck".
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f, abbreviation for the social networking service Facebook
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Common abbreviation for Storey (for example, "3F" = 3rd floor)
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F word (disambiguation), euphemism for several words beginning with "f"
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Dominical letter F for a common year starting on Tuesday
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F, as an online expression of respects to a recently deceased person (as a reference to the videogame Call of Duty: Advanced Warfare)
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F, the production code for the 1964 Doctor Who serial The Aztecs
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"F" Is for Fugitive, the sixth novel in Sue Grafton's "Alphabet mystery" series, published in 1989
See also
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Class F (disambiguation)
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F class (disambiguation)
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F-sharp (disambiguation)
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F type (disambiguation)