F (disambiguation)
Encyclopedia
F
is the sixth letter of the Latin alphabet.
F may also refer to:
As well as
F
F is the sixth letter in the basic modern Latin alphabet.-History:The origin of ⟨f⟩ is the Semitic letter vâv that represented a sound like or . Graphically, it originally probably depicted either a hook or a club...
is the sixth letter of the Latin alphabet.
F may also refer to:
Science
- FahrenheitFahrenheitFahrenheit is the temperature scale proposed in 1724 by, and named after, the German physicist Daniel Gabriel Fahrenheit . Within this scale, the freezing of water into ice is defined at 32 degrees, while the boiling point of water is defined to be 212 degrees...
- FaradFaradThe farad is the SI unit of capacitance. The unit is named after the English physicist Michael Faraday.- Definition :A farad is the charge in coulombs which a capacitor will accept for the potential across it to change 1 volt. A coulomb is 1 ampere second...
, a unit for electric capacitance - Faraday constant
- FluorineFluorineFluorine is the chemical element with atomic number 9, represented by the symbol F. It is the lightest element of the halogen column of the periodic table and has a single stable isotope, fluorine-19. At standard pressure and temperature, fluorine is a pale yellow gas composed of diatomic...
- Focal lengthFocal lengthThe focal length of an optical system is a measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus...
- f-numberF-numberIn optics, the f-number of an optical system expresses the diameter of the entrance pupil in terms of the focal length of the lens; in simpler terms, the f-number is the focal length divided by the "effective" aperture diameter...
, the focal length divided by the aperture diameter
- f-number
- ForceForceIn physics, a force is any influence that causes an object to undergo a change in speed, a change in direction, or a change in shape. In other words, a force is that which can cause an object with mass to change its velocity , i.e., to accelerate, or which can cause a flexible object to deform...
- FrequencyFrequencyFrequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency.The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency...
- FaxFaxFax , sometimes called telecopying, is the telephonic transmission of scanned printed material , normally to a telephone number connected to a printer or other output device...
As well as
- BioavailabilityBioavailabilityIn pharmacology, bioavailability is a subcategory of absorption and is used to describe the fraction of an administered dose of unchanged drug that reaches the systemic circulation, one of the principal pharmacokinetic properties of drugs. By definition, when a medication is administered...
, which is expressed as the letter "F" in medical chemistry equations - F bandF bandThe F band is the range of radio frequencies from 90 GHz to 140 GHz in the electromagnetic spectrum. This is equal to wave lengths between 2.1 mm and 3.3 mm...
, the range of radio frequencies from 3 to 4 GHz - f-blockF-blockThe f-block of the periodic table of the elements consists of those elements whose atoms or ions have valence electrons in f-orbitals. Actual electronic configurations may be slightly different from what is predicted by the Aufbau principle...
, a group of elements on the periodic table elements - F regionF regionThe F region of the ionosphere is home to the F layer of ionization, also called the Appleton layer, after the English physicist Edward Appleton. As with other ionospheric sectors, 'layer' implies a concentration of plasma, while 'region' is the area that contains the said layer...
, part of the ionosphere - Haplogroup F (Y-DNA), a patrilineal haplogroup
- Haplogroup F (mtDNA)Haplogroup F (mtDNA)In human mitochondrial genetics, Haplogroup F is a human mitochondrial DNA haplogroup typical for the Far East.Haplogroup F is centered in Asia and appears in eastern China and Japan. It is not found in the Americas...
, a matrilineal haplogroup - PhenylalaninePhenylalaninePhenylalanine is an α-amino acid with the formula C6H5CH2CHCOOH. This essential amino acid is classified as nonpolar because of the hydrophobic nature of the benzyl side chain. L-Phenylalanine is an electrically neutral amino acid, one of the twenty common amino acids used to biochemically form...
, abbreviated as Phe or F
Mathematics
- The number 1515 (number)15 is the natural number following 14 and preceding 16. In English, it is the smallest natural number with seven letters in its spelled name....
in hexadecimal - The hypergeometric function pFq
- F-distribution, a continuous probability distribution
- F-testF-testAn F-test is any statistical test in which the test statistic has an F-distribution under the null hypothesis.It is most often used when comparing statistical models that have been fit to a data set, in order to identify the model that best fits the population from which the data were sampled. ...
, a statistical test
- F-test
- Femto, a prefix meaning 10-15
- Fibonacci numberFibonacci numberIn mathematics, the Fibonacci numbers are the numbers in the following integer sequence:0,\;1,\;1,\;2,\;3,\;5,\;8,\;13,\;21,\;34,\;55,\;89,\;144,\; \ldots\; ....
Computers & electronics
- F (programming language), a subset of Fortran 95
- F Sharp (programming language), a functional and object-oriented language for the .NET platform.
- F connectorF connectorThe F connector is a type of coaxial RF connector commonly used for "over the air" terrestrial television, cable television and universally for satellite television and cable modems, usually with RG-6/U cable or, in older installations, with RG-59/U cable. It was invented by Eric E...
, used for inlet in cable modems - F crimpF crimpF-crimp is a type of solderless electrical Crimp connection. It not related to the F connector common in RF equipment.It is sometimes referred to as open-barrel, which is technically a more general term including crimp types such as Weather Pack and Metri Pack.F-crimp is a more mechanically robust...
, 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 pointFloating pointIn computing, floating point describes a method of representing real numbers in a way that can support a wide range of values. Numbers are, in general, represented approximately to a fixed number of significant digits and scaled using an exponent. The base for the scaling is normally 2, 10 or 16...
s
Music
- F (musical note)F (musical note)F is a musical note, the fourth above C. It is also known as fa in fixed-do solfège.When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of Middle F is approximately 349.228 Hz. See pitch for a discussion of historical variations in...
- F majorF majorF major is a musical major scale based on F, consisting of the pitches F, G, A, B, C, D, and E. Its key signature has one flat . It is by far the oldest key signature with an accidental, predating the others by hundreds of years...
, the scale and key - F minorF minorF minor is a minor scale based on F, consisting of the pitches F, G, A, B, C, D, and E. The harmonic minor raises the E to E. Its key signature has four flats ....
, the scale and key - Forte (music)
- F (album)F (album)f is the eighth studio album by Japanese artist Masaharu Fukuyama. It was released on 25 April 2001. This album had been certified as a million-seller by the Recording Industry Association of Japan.-Track listing:##Heaven#Venus###Escape...
, an album by Japanese singer Masaharu Fukuyama
Transportation
- F Sixth Avenue LocalF (New York City Subway service)The F Sixth Avenue Local is a rapid transit service of the New York City Subway. It is colored orange on route signs, station signs, and the official subway map, since it runs on the IND Sixth Avenue Line through Manhattan....
, a rapid transit service of the New York City Subway - F (S-train)F (S-train)F is the service designation for trains on the ring line of Copenhagen's S-train network. It runs from about 05:00 to 01:00 from Ny Ellebjerg to Hellerup...
, trains on the ring line of Copenhagen's commuter train network - F Market & Wharves, a heritage streetcarHeritage streetcarHeritage streetcars or heritage trams are a development of the heritage railways that are becoming popular across the world. As with modern streetcar systems, the vehicles are referred to as trams or tramcars in the United Kingdom, Australasia and certain other places , but as streetcars or...
line operated by the San Francisco Municipal RailwaySan Francisco Municipal RailwayThe San Francisco Municipal Railway is the public transit system for the city and county of San Francisco, California. In 2006, it served with an operating budget of about $700 million...
Other uses
- F (grade), a failing grade
- F (IPA), the voiceless labiodental fricative phoneme
- The citation abbreviation of the Federal ReporterFederal ReporterThe Federal Reporter is a case law reporter in the United States that is published by West Publishing. It begins with cases decided in 1880. It was preceded by Federal Cases...
- Ford F-SeriesFord F-SeriesThe F-Series is a series of full-size pickup trucks from Ford Motor Company which has been sold continuously for over six decades. The most popular variant of the F-Series is the F-150...
, a series of full-size pickup trucks from Ford Motor Company - The NYSE ticker symbol of the Ford Motor CompanyFord Motor CompanyFord Motor Company is an American multinational automaker based in Dearborn, Michigan, a suburb of Detroit. The automaker was founded by Henry Ford and incorporated on June 16, 1903. In addition to the Ford and Lincoln brands, Ford also owns a small stake in Mazda in Japan and Aston Martin in the UK...
- F, FujitsuFujitsuis a Japanese multinational information technology equipment and services company headquartered in Tokyo, Japan. It is the world's third-largest IT services provider measured by revenues....
's mobile phoneMobile phoneA mobile phone is a device which can make and receive telephone calls over a radio link whilst moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile network operator...
s in JapanJapanJapan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south... - f, common abbreviation in lexicons meaning feminine grammatical genderGrammatical genderGrammatical gender is defined linguistically as a system of classes of nouns which trigger specific types of inflections in associated words, such as adjectives, verbs and others. For a system of noun classes to be a gender system, every noun must belong to one of the classes and there should be...
- f. (plural ff.), implies and the following page, usually as a suffix to a page number in the index of a book
- Forward position in Australian Rules football
- "F" is sometimes used to censor the obscenity "fuckFuck"Fuck" is an English word that is generally considered obscene which, in its most literal meaning, refers to the act of sexual intercourse. By extension it may be used to negatively characterize anything that can be dismissed, disdained, defiled, or destroyed."Fuck" can be used as a verb, adverb,...
," 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 floorStoreyA storey or story is any level part of a building that could be used by people...
(for example, "3F" = 3rd floor) - FuckFuck"Fuck" is an English word that is generally considered obscene which, in its most literal meaning, refers to the act of sexual intercourse. By extension it may be used to negatively characterize anything that can be dismissed, disdained, defiled, or destroyed."Fuck" can be used as a verb, adverb,...
, also known as "the F word"