Computers

• L (complexity)
  L (complexity)
  In computational complexity theory, L is the complexity class containing decision problems which can be solved by a deterministic Turing machine using a logarithmic amount of memory space...
  
  , a complexity class in computational complexity theory
• L programming language
  L programming language
  Three programming languages named L are:*A programming language started by Larry McVoy, with extensive help from Jeffrey Hobbs, Oscar Bonilla, and Tim Daly, Jr. It aims to wrap C-like syntax around core Tcl functionality....
  
  
• L - A Mathemagical Adventure
  L - A Mathemagical Adventure
  L - A Mathemagical Adventure is an educational adventure game that was created for the BBC/Acorn class of computers in 1984. It was written by members of the Association of Teachers of Mathematics and found its way into school computers, predominantly in the UK. The game is controlled by a...
  
  , a 1984 computer game

Film and literature

• L (novel)
  L (novel)
  L is a novel written by the Norwegian writer Erlend Loe. It is about a group of young men who go on an expedition to the small island Manuae in the Pacific Ocean. It was published in 1999, and was a big success.-Plot:...
  
  , by Erlend Loe
• L (Death Note)
  L (Death Note)
  , widely known by the letter , is a fictional character in the manga series Death Note by Tsugumi Ohba and Takeshi Obata. Considered the world's greatest detective, he lives in secrecy...
  
  , a character in Death Note media
• Class L, a fictional planetary classification in Star Trek media
• A character played by Linda Fiorentino in Men In Black
  Men in Black (film)
  Men in Black is a 1997 science fiction comedy film directed by Barry Sonnenfeld, starring Tommy Lee Jones, Will Smith and Vincent D'Onofrio. The film was based on the Men in Black comic book series by Lowell Cunningham, originally published by Marvel Comics. The film featured the creature effects...
  
  

Mathematics

• Gödel's constructible universe, a particular class of sets which can be described entirely in terms of simpler sets
• L-function
  L-function
  The theory of L-functions has become a very substantial, and still largely conjectural, part of contemporary analytic number theory. In it, broad generalisations of the Riemann zeta function and the L-series for a Dirichlet character are constructed, and their general properties, in most cases...
  
  
• Likelihood function
  Likelihood function
  In statistics, a likelihood function is a function of the parameters of a statistical model, defined as follows: the likelihood of a set of parameter values given some observed outcomes is equal to the probability of those observed outcomes given those parameter values...
  
  , in statistics

Music

• L (Godley & Creme album), 1978
• L (Ayumi Hamasaki EP), 2010
• L (Steve Hillage album)
  L (Steve Hillage album)
  L is the second studio album by British progressive rock musician Steve Hillage.It was recorded primarily in New York, at the Secret Sound, Woodstock, N.Y., and was produced and engineered by Todd Rundgren, using musicians from Todd Rundgren's band Utopia and others.According to liner notes...
  
  , 1976
• L (Candy Lo EP), 2008
• L (moe. album)
  L (moe. album)
  L was recorded at several shows from moe.'s Fall 1999 tour, Former drummer Jim Loughlin returned to the band earlier in the year as a multi-instrumental utility man, adding to the drum work of Vinnie Amico....
  
  , 2000
• Lesure Number, music catalogue identifier: See List of compositions by Claude Debussy by Lesure Numbers

Biology

• Carl Linnaeus, in botanist author citations (L.)
• Laelia
  Laelia
  Laelia, abbreviated L. in the horticultural trade, is a small genus of 25 species from the orchid family . This is one of the most important and popular orchid genera, because of the beautiful flowers, their genetic properties and because they are fairly easy in culture. It is probably named after...
  
  , an orchid genus
• Haplogroup L (Y-DNA)
  Haplogroup L (Y-DNA)
  In human genetics, Haplogroup L is a Y-chromosome DNA haplogroup.-Origins:Haplogroup L is associated with South Asia. It has also been found at low frequencies among populations of Central Asia, Southwest Asia, and Southern Europe along the coast of the Mediterranean Sea...
  
  
• Vertebra in the lumbar
  Lumbar
  In tetrapod anatomy, lumbar is an adjective that means of or pertaining to the abdominal segment of the torso, between the diaphragm and the sacrum ...
  
   region of the spinal cord
• ATC code L
  ATC code L
  -References:...
  
   Antineoplastic and immunomodulating agents, a section of the Anatomical Therapeutic Chemical Classification System

Chemistry

• Avogadro constant, in some German scientific literature
• Leucine
  Leucine
  Leucine is a branched-chain α-amino acid with the chemical formula HO2CCHCH2CH2. Leucine is classified as a hydrophobic amino acid due to its aliphatic isobutyl side chain. It is encoded by six codons and is a major component of the subunits in ferritin, astacin and other 'buffer' proteins...
  
  , an α-amino acid

Physics

• Class L, a Stellar classification
  Stellar classification
  In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...
  
  
• Inductance
  Inductance
  In electromagnetism and electronics, inductance is the ability of an inductor to store energy in a magnetic field. Inductors generate an opposing voltage proportional to the rate of change in current in a circuit...
  
  , the ratio of the magnetic flux to the current in an electrical circuit
• Lagrangian
  Lagrangian
  The Lagrangian, L, of a dynamical system is a function that summarizes the dynamics of the system. It is named after Joseph Louis Lagrange. The concept of a Lagrangian was originally introduced in a reformulation of classical mechanics by Irish mathematician William Rowan Hamilton known as...
  
  , a function that summarizes the dynamics of a dynamical system
• L band
  L band
  L band refers to four different bands of the electromagnetic spectrum: 40 to 60 GHz , 1 to 2 GHz , 1565 nm to 1625 nm , and around 3.5 micrometres .-NATO L band:...
  
  , a radio frequency range
• Luminosity
  Luminosity
  Luminosity is a measurement of brightness.-In photometry and color imaging:In photometry, luminosity is sometimes incorrectly used to refer to luminance, which is the density of luminous intensity in a given direction. The SI unit for luminance is candela per square metre.The luminosity function...
  
  
• Angular momentum
  Angular momentum
  In physics, angular momentum, moment of momentum, or rotational momentum is a conserved vector quantity that can be used to describe the overall state of a physical system...
  
  
• Latent heat
  Latent heat
  Latent heat is the heat released or absorbed by a chemical substance or a thermodynamic system during a process that occurs without a change in temperature. A typical example is a change of state of matter, meaning a phase transition such as the melting of ice or the boiling of water. The term was...
  
  

Vehicles and transportation

• Chicago 'L'
  Chicago 'L'
  The L is the rapid transit system serving the city of Chicago and some of its surrounding suburbs. It is operated by the Chicago Transit Authority...
  
  , a rapid transit system in Chicago
• L (New York City Subway service)
  L (New York City Subway service)
  The L 14th Street – Canarsie Local is a rapid transit service of the New York City Subway, providing service along the entire length of the two-tracked BMT Canarsie Line...
  
  
• L-plate
  L-plate
  An L-plate is a square plate bearing a sans-serif letter L, for learner, which must be affixed to the front and back of a vehicle in many countries if its driver is a learner under instruction, or a motorcycle rider with provisional entitlement to ride restricted motorcycles.- Australia :In...
  
  , a plate for learning drivers under instruction
• The low gear of an automatic transmission
  Automatic transmission
  An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...
  
  

Other uses

• Canon L lens
  Canon l lens
  An L lens is a line of SLR photography lenses made by Canon.L lenses are Canon's top-of-the-line lenses. The "L" officially stands for "Luxury", a reference to the lenses' high price and proclaimed build quality. The use of "ASPH" was common to notate aspherical elements throughout Canon's and...
  
  
• Left (direction)
• Lucius, a Roman praenomen
  Praenomen
  The praenomen was a personal name chosen by the parents of a Roman child. It was first bestowed on the dies lustricus , the eighth day after the birth of a girl, or the ninth day after the birth of a boy...
  
  
• The Roman numeral 50
• The velar lateral approximant in IPA notation
• The low-prestige register in a diglossia
  Diglossia
  In linguistics, diglossia refers to a situation in which two dialects or languages are used by a single language community. In addition to the community's everyday or vernacular language variety , a second, highly codified variety is used in certain situations such as literature, formal...
  
  .