F

Look up F or f in Wiktionary, the free dictionary.

F is the sixth letter of the Latin alphabet.

F may also refer to:

Science

• Fahrenheit
• Farad, a unit for electric capacitance
• Faraday constant
• Fluorine
• Focal length
  • f-number, the focal length divided by the aperture diameter
• Force
• Frequency

As well as

• Bioavailability, which is expressed as the letter "F" in medical chemistry equations
• F band, the range of radio frequencies from 3 to 4 GHz
• f-block, a group 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

Mathematics

• The number 15 in hexadecimal
• 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

• F (programming language), a subset of Fortran 95
• F Sharp (programming language), a functional and object-oriented language for the .NET platform.
• F connector, used for inlet in cable modems
• 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, the scale and key
• F minor, the scale and key
• Forte (music)

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

Other uses

• F (grade), a failing grade
• F (IPA), the voiceless labiodental fricative phoneme
• The citation abbreviation of the Federal Reporter
• Ford F-Series, a series of full-size pickup trucks from Ford Motor Company
• The NYSE ticker symbol of the Ford Motor Company
• F, Fujitsu's mobile phones in Japan
• f, common abbreviation in lexicons meaning feminine grammatical gender
• Forward position in Australian Rules football
• "F" is sometimes used to censor the obscenity "fuck," which can be referred to as the "f-word" or "f-bomb."
• F, abbreviation for fax number
• F, a class of designation in the US military aircraft designation system which stands for "Fighter"
• Common abbreviation for floor (for example, "3F" = 3rd floor)

See also

• Class F

This disambiguation page lists articles associated with the same Latin letter. If an internal link led you here, you may wish to change the link to point directly to the intended article.