B (disambiguation)
Encyclopedia
B
is the second letter of the Latin alphabet.
B may also refer to:
B
B is the second letter in the basic modern Latin alphabet. It is used to represent a variety of bilabial sounds , most commonly a voiced bilabial plosive.-History:...
is the second letter of the Latin alphabet.
B may also refer to:
Science and technology
- B battery, a battery used to provide the plate voltage of a vacuum tube
- Haplogroup B (mtDNA)Haplogroup B (mtDNA)In human mitochondrial genetics, Haplogroup B is a human mitochondrial DNA haplogroup.-Origin:Haplogroup B is believed to have arisen in Asia some 50,000 years before present. Its ancestral haplogroup was Haplogroup R....
, a human mitochondrial DNA (mtDNA) haplogroup - Haplogroup B (Y-DNA)Haplogroup B (Y-DNA)In human genetics, Haplogroup B is a Y-chromosome haplogroup.-Distribution:Haplogroup B is localized to sub-Saharan Africa, especially to tropical forests of West-Central Africa. After Y-haplogroup A, it is the second oldest and one of the most diverse human Y-haplogroups...
, a Y-chromosomal DNA (Y-DNA) haplogroup - B, Blood typeBlood typeA blood type is a classification of blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells . These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system...
- ATC code B Blood and blood forming organs, a section of the Anatomical Therapeutic Chemical Classification System
- BoronBoronBoron is the chemical element with atomic number 5 and the chemical symbol B. Boron is a metalloid. Because boron is not produced by stellar nucleosynthesis, it is a low-abundance element in both the solar system and the Earth's crust. However, boron is concentrated on Earth by the...
, a chemical element - B, B+ and B-, expressions of buoyancy in convective available potential energyConvective available potential energyIn meteorology, convective available potential energy , sometimes, simply, available potential energy , is the amount of energy a parcel of air would have if lifted a certain distance vertically through the atmosphere...
- Bulb (photography)Bulb (photography)Bulb, abbreviated B, is a shutter speed setting on an adjustable camera that allows for long exposure times under the direct control of the photographer. With this setting, the shutter simply stays open as long as the shutter release button remains depressed...
, a shutter-speed setting - B horizon, a layer of soil commonly known as subsoil
Astronomy
- B, abbreviation for astronomical objects in the Barnard list of dark nebulae
- b represents latitude in the Galactic coordinate systemGalactic coordinate systemThe galactic coordinate system is a celestial coordinate system which is centered on the Sun and is aligned with the apparent center of the Milky Way galaxy. The "equator" is aligned to the galactic plane...
Symbols for physical and chemical quantities and units
- one of the reciprocal latticeReciprocal latticeIn physics, the reciprocal lattice of a lattice is the lattice in which the Fourier transform of the spatial function of the original lattice is represented. This space is also known as momentum space or less commonly k-space, due to the relationship between the Pontryagin duals momentum and...
vectors (b*) - breadth (b), see lengthLengthIn geometric measurements, length most commonly refers to the longest dimension of an object.In certain contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured. For example it is possible to cut a length of a wire which is shorter than wire...
- impact parameterImpact parameterThe impact parameter b is defined as the perpendicular distance between the path of a projectile and the center of the field U created by an object that the projectile is approaching...
(b) - molality (b)
- barn (unit)Barn (unit)A barn is a unit of area. Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is used in all fields of high energy physics to express the cross sections of any scattering process, and is best understood as a measure of the...
(b), a unit of area - magnetic fieldMagnetic fieldA magnetic field is a mathematical description of the magnetic influence of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude ; as such it is a vector field.Technically, a magnetic field is a pseudo vector;...
(B) - napierian absorbance (B)
- rotational constantRigid rotorThe rigid rotor is a mechanical model that is used to explain rotating systems.An arbitrary rigid rotor is a 3-dimensional rigid object, such as a top. To orient such an object in space three angles are required. A special rigid rotor is the linear rotor which isa 2-dimensional object, requiring...
(B) - second virial coefficientVirial coefficientVirial coefficients B_i appear as coefficients in the virial expansion of the pressure of a many-particle system in powers of the density, providing systematic corrections to the ideal gas law...
(B) - susceptanceSusceptanceIn electrical engineering, susceptance is the imaginary part of admittance. The inverse of admittance is impedance and the real part of admittance is conductance. In SI units, susceptance is measured in siemens...
(B)
Music, education and religion
- B (musical note)B (musical note)B, also known as H, Si or Ti, is the seventh note of the solfège. It lies a chromatic semitone below C and is thus the enharmonic equivalent of C-flat....
- B (I Am Kloot album)B (I Am Kloot album)B is a compilation album of b-sides, rare recordings and unreleased material from Manchester band I Am Kloot.The album was released in September 2009...
, a compilation album by Manchester band I Am Kloot - B (grade), for evaluation of students' work
- Codex Vaticanus Graecus 1209, an ancient bible
- BarnabitesBarnabitesThe Barnabites, or Clerics Regular of Saint Paul is a Roman Catholic order.-Establishment of the Order :It was founded in 1530 by three Italian noblemen: St. Anthony Mary Zaccaria The Barnabites, or Clerics Regular of Saint Paul (Latin: Clerici Regulares Sancti Pauli, abbr. B.) is a Roman Catholic...
, a religious order abbreviated to the postnominal B. Flat (music), a note lower in pitch by a semitone - b, an IamamiwhoamiIamamiwhoamiiamamiwhoami is an electronic music and multimedia project headlined by Swedish singer-songwriter Jonna Lee. Videos released from the project's YouTube channel have spread virally. The first clip was uploaded on December 4, 2009, and was forwarded to a number of music journalists and blogs. Another...
song - Charly BCharly BCharly B, born Charles Blanvillain in 1981, is a French reggae singer-songwriter who performs, and whose music is distributed, internationally.-Debut:...
(born 1981), stage name of reggae singer-songwriter Charles Blanvillain
Computing and internet
- B (programming language)
- B-MethodB-MethodThe B method is method of software development based on B, a tool-supported formal method based around an abstract machine notation, used in the development of computer software. It was originally developed by Jean-Raymond Abrial in France and the UK. B is related to the Z notation and supports...
, for computer software development - b, bit
- B, byte
- B-treeB-treeIn computer science, a B-tree is a tree data structure that keeps data sorted and allows searches, sequential access, insertions, and deletions in logarithmic time. The B-tree is a generalization of a binary search tree in that a node can have more than two children...
, a data structure
denoting bold text/b/, the name of the "random" board on many imageboardImageboardAn imageboard or image board is a type of Internet forum that revolves around the posting of images. The first imageboards were created in Japan, and many English-language imageboards today are centered around Japanese culture...
websites, most notably 4chan
Publishing
- b (newspaper)The Baltimore SunThe Baltimore Sun is the U.S. state of Maryland’s largest general circulation daily newspaper and provides coverage of local and regional news, events, issues, people, and industries....
, a free daily, tabloid sized newspaper, published by The Baltimore Sun
Sport
- Backline, in Australian Rules football
- B, often used after the name of football clubs to denote a reserve teamReserve teamLarge professional sports clubs often have far more players under contract than could possibly play in a match. As a result, many of these clubs create second teams composed of players who need playing time, but have little hope of playing on the first team. The players on this second team are...
Transportation
- B (New York City Subway service)B (New York City Subway service)The B Sixth Avenue Express 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 over the IND Sixth Avenue Line in Manhattan....
- B (Buenos Aires Subway service)
- B (S-train)B (S-train)B is a service on the S-train network in Copenhagen. It runs between Høje Taastrup and Holte and provides stopping services on the S-train system's Tåstrup radial and the inner part of the Hillerød radial....
See also
- DecibelDecibelThe decibel is a logarithmic unit that indicates the ratio of a physical quantity relative to a specified or implied reference level. A ratio in decibels is ten times the logarithm to base 10 of the ratio of two power quantities...
, one tenth of a bel (B) - B postcode areaB postcode areaThe B postcode area, also known as the Birmingham postcode area, provides postcodes for the boroughs of Birmingham, Solihull and Sandwell and parts of Warwickshire, Worcestershire and Staffordshire in England.-Coverage:...
(United Kingdom)