F (disambiguation)

F is the sixth letter of the Latin alphabet.

F may also refer to:

Science and technology

• Fahrenheit
• Farad, a unit for electric capacitance
• Faraday constant
• Fluorine (symbol), a chemical element
• Focal length of a lens
  • f-number (sometimes called f-ratio, f-stop, or written f/), the focal length divided by the aperture diameter
• Force
• Form (botany)
• Form (zoology)
• Frequency
• Bioavailability, which is expressed as the letter "F" in medical chemistry equations
• F band (NATO), a radio frequency band from 3 to 4 GHz
• F band (waveguide), a millimetre wave band from 90 to 140 GHz
• f-block, a block of elements on the periodic table elements
• F region, part of the ionosphere
• Haplogroup F (Y-DNA), a patrilineal haplogroup
• Haplogroup F (mtDNA), a matrilineal haplogroup
• Phenylalanine, abbreviated as Phe or F
• Helmholtz Free Energy, also abbreviated as A
• The electromagnetic field tensor in electromagnetism
  • This is often generalize to include the field tensors of other interactions, as in i.e. the gluon field strength tensor.

Mathematics

• The number 15 in hexadecimal and higher positional systems
• The hypergeometric function _pF_q
• F-distribution, a continuous probability distribution
  • F-test, a statistical test
• Femto, a prefix meaning 10⁻¹⁵
• Fibonacci number

Computers and electronics

• F (programming language), a subset of Fortran 95
• F Sharp (programming language), a functional and object-oriented language for the .NET platform.
• F* (programming language), a dependently typed functional language for the .NET platform.
• F connector, used for inlet in cable modems
• F crimp, a type of solderless electrical connection
• F-measure, the harmonic mean of precision and recall
• In programming languages, f is often used to represent floating points

Music

• F (musical note)
• F major, a scale
• F minor, a scale
• F major chord, Chord names and symbols (popular music)
• f, Forte (music)
• F (album), an album by Japanese singer Masaharu Fukuyama
• F Album, an album by Japanese duo KinKi Kids
• "F", song on the double A-side single "Tsume Tsume Tsume/F" by Japanese metal band Maximum the Hormone

Transportation

• F Sixth Avenue Local, a rapid transit service of the New York City Subway
• F (S-train), trains on the ring line of Copenhagen's commuter train network
• F Market & Wharves, a heritage streetcar line operated by the San Francisco Municipal Railway

Other uses

• F (film), a 2010 film directed by Johannes Roberts
• France, on the vehicle registration plates of the European Union
• F (grade), a failing grade
• f, the symbol used in the International Phonetic Alphabet for the voiceless labiodental fricative
• Fax, referring to a facsimile machine
• f, common abbreviation in lexicons meaning feminine grammatical gender
• The citation abbreviation of the Federal Reporter
• The NYSE ticker symbol of the Ford Motor Company
• Ford F-Series, a series of full-size pickup trucks from Ford Motor Company
• F, Fujitsu's mobile phones in Japan
• Forward position in Australian Rules football
• "F" or "F***", sometimes used to censor "fuck".
• F, abbreviation for fax number
• f, abbreviation for the social networking service Facebook
• F, a class of designation in the United States military aircraft designation systems which stands for "Fighter"
• Common abbreviation for floor (for example, "3F" = 3rd floor)
• F, a common designation for fighter aircraft
• F word (disambiguation), euphemism for several words beginning with "f"
• Dominical letter F for a common year starting on Tuesday
• F, as an online expression of respects to a recently deceased person (as a reference to the videogame Call of Duty: Advanced Warfare)
• F, the production code for the 1964 Doctor Who serial The Aztecs
• Foxtrot, the military time zone code for UTC+06:00
• "F" Is for Fugitive, the sixth novel in Sue Grafton's "Alphabet mystery" series, published in 1989

See also

• Class F (disambiguation)
• F class (disambiguation)
• F-sharp (disambiguation)
• F type (disambiguation)