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Propagation Of Light In Non-inertial Reference Frames ''
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Propagation can refer to: *Chain propagation in a chemical reaction mechanism * Crack propagation, the growth of a crack during the fracture of materials *Propaganda, non-objective information used to further an agenda *Reproduction, and other forms of multiplication or increase **Plant propagation, the production of more plants ** Propagation of schema, in artificial reproduction * Software propagation, the distribution of free software * Wave propagation, the motion of a wave ** Radio propagation, the application of wave propagation to radio communications ;In music * ''Propagation'' (album) *"Propagation", a song by Lower Dens from the album '' Nootropics'' *"Propagation", a song by Com Truise from the album ''Iteration Iteration is the repetition of a process in order to generate a (possibly unbounded) sequence of outcomes. Each repetition of the process is a single iteration, and the outcome of each iteration is then the starting point of the next iteration. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chain Propagation
In chemistry, chain propagation (sometimes just referred to as propagation) is a process in which a reactive intermediate is continuously regenerated during the course of a Chain reaction#Chemical chain reactions, chemical chain reaction. For example, in the Halogenation, chlorination of methane, there is a two-step propagation cycle involving as chain carriers a chlorine atom and a methyl radical IUPAC Gold Book which are regenerated alternately: : : The two steps add to give the equation for the overall chain reaction: : Polymerization In a chain-growth polymerization reaction, the reactive end-groups of a polymer chain react in each propagation step with a new monomer molecule transferring the reactive group to the last unit. Here the chain carrier is the polymer molecule with a reactive end-group, and at each step it i ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crack Propagation
Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials. It uses methods of analytical solid mechanics to calculate the driving force on a crack and those of experimental solid mechanics to characterize the material's resistance to fracture. Theoretically, the stress ahead of a sharp crack tip becomes infinite and cannot be used to describe the state around a crack. Fracture mechanics is used to characterise the loads on a crack, typically using a single parameter to describe the complete loading state at the crack tip. A number of different parameters have been developed. When the plastic zone at the tip of the crack is small relative to the crack length the stress state at the crack tip is the result of Elasticity (physics), elastic forces within the material and is termed linear elastic fracture mechanics (LEFM) and can be characterised using the stress intensity factor K. Although the load on a crack can be arbitrary, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propaganda
Propaganda is communication that is primarily used to influence or persuade an audience to further an agenda, which may not be objective and may be selectively presenting facts to encourage a particular synthesis or perception, or using loaded language to produce an emotional rather than a rational response to the information that is being presented. Propaganda can be found in a wide variety of different contexts. Beginning in the twentieth century, the English term ''propaganda'' became associated with a Psychological manipulation, manipulative approach, but historically, propaganda had been a neutral descriptive term of any material that promotes certain opinions or ideology, ideologies. A wide range of materials and media are used for conveying propaganda messages, which changed as new technologies were invented, including paintings, cartoons, posters, pamphlets, films, radio shows, TV shows, and websites. More recently, the digital age has given rise to new ways of dissemina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reproduction
Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parent" or parents. There are two forms of reproduction: Asexual reproduction, asexual and Sexual reproduction, sexual. In asexual reproduction, an organism can reproduce without the involvement of another organism. Asexual reproduction is not limited to unicellular organism, single-celled organisms. The cloning of an organism is a form of asexual reproduction. By asexual reproduction, an organism creates a genetically similar or identical copy of itself. The evolution of sexual reproduction is a major puzzle for biologists. The two-fold cost of sexual reproduction is that only 50% of organisms reproduce and organisms only pass on 50% of their genes.John Maynard Smith ''The Evolution of Sex'' 1978. Sexual reproduction typically requires the sexual interaction of two specialized reproductive cells, called gametes, which contain half t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Propagation
Plant propagation is the process by which new plants grow from various sources, including seeds, Cutting (plant), cuttings, and other plant parts. Plant propagation can refer to both man-made and natural processes. Propagation typically occurs as a step in the overall cycle of plant growth. For seeds, it happens after ripening and Seed dispersal, dispersal; for vegetative parts, it happens after detachment or pruning; for asexually-reproducing plants, such as strawberry, it happens as the new plant develops from existing parts. Countless plants are propagated each day in horticulture and agriculture. Plant propagation is vital to agriculture and horticulture, not just for human food production but also for forest and fibre crops, as well as traditional and herbal medicine. It is also important for plant breeding. Sexual propagation Seeds and spores can be used for reproduction (e.g. sowing). Seeds are typically produced from Plant sexuality, sexual reproduction within a spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propagation Of Schema
A schema (: schemata) is a template in computer science used in the field of genetic algorithms that identifies a subset of strings with similarities at certain string positions. Schemata are a special case of cylinder sets, forming a basis for a product topology on strings. In other words, schemata can be used to generate a topology on a space of strings. Description For example, consider binary strings of length 6. The schema 1**0*1 describes the set of all words of length 6 with 1's at the first and sixth positions and a 0 at the fourth position. The * is a wildcard symbol, which means that positions 2, 3 and 5 can have a value of either 1 or 0. The ''order of a schema'' is defined as the number of fixed positions in the template, while the '' defining length'' \delta(H) is the distance between the first and last specific positions. The order of 1**0*1 is 3 and its defining length is 5. The ''fitness of a schema'' is the average fitness of all strings matching the schema. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Propagation
The GNU General Public Licenses (GNU GPL or simply GPL) are a series of widely used free software licenses, or ''copyleft'' licenses, that guarantee end users the freedom to run, study, share, or modify the software. The GPL was the first copyleft license available for general use. It was originally written by Richard Stallman, the founder of the Free Software Foundation (FSF), for the GNU Project. The license grants the recipients of a computer program the rights of the Free Software Definition. The licenses in the GPL series are all copyleft licenses, which means that any derivative work must be distributed under the same or equivalent license terms. The GPL is more restrictive than the GNU Lesser General Public License, and even more distinct from the more widely used permissive software licenses such as BSD, MIT, and Apache. Historically, the GPL license family has been one of the most popular software licenses in the free and open-source software (FOSS) domain. Promine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wave Propagation
In physics, mathematics, engineering, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities. '' Periodic waves'' oscillate repeatedly about an equilibrium (resting) value at some frequency. When the entire waveform moves in one direction, it is said to be a travelling wave; by contrast, a pair of superimposed periodic waves traveling in opposite directions makes a '' standing wave''. In a standing wave, the amplitude of vibration has nulls at some positions where the wave amplitude appears smaller or even zero. There are two types of waves that are most commonly studied in classical physics: mechanical waves and electromagnetic waves. In a mechanical wave, stress and strain fields oscillate about a mechanical equilibrium. A mechanical wave is a local deformation (strain) in some physical medium that propagates from particle to particle by creating local stresses that cause strain in neighboring particles too ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Propagation
Radio propagation is the behavior of radio waves as they travel, or are wave propagation, propagated, from one point to another in vacuum, or into various parts of the atmosphere. As a form of electromagnetic radiation, like light waves, radio waves are affected by the phenomena of reflection (physics), reflection, refraction, diffraction, absorption (electromagnetic radiation), absorption, polarization (waves), polarization, and scattering. Understanding the effects of varying conditions on radio propagation has many practical applications, from choosing frequencies for amateur radio communications, international shortwave Broadcasting, broadcasters, to designing reliable Mobile phone, mobile telephone systems, to radio navigation, to operation of radar systems. Several different types of propagation are used in practical radio transmission systems. ''Line-of-sight propagation'' means radio waves which travel in a straight line from the transmitting antenna to the receiving ante ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propagation (album)
''Propagation'' (1994) is an album by the American ambient musician Robert Rich. This album is an expression of Rich’s interest in biology and is a tribute to the proliferation of organic life in all its forms. It features a complex range of world music influences, just tunings and guest performers, similar to ''Rainforest'' (1989). Track listing #”Animus” – 9:29 #”Lifeblood” – 5:31 #”Whispers of Eden” – 7:35 #”Terraced Fields” – 4:24 #”Luminous Horizon” – 9:45 #”Spirit Catcher” – 9:25 #”Guilin” – 11:11 Personnel *Robert Rich – Wavestation, Morpheus, Proteus/3, DX711D, EPS16+, Prophet-5, bamboo and PVC flutes, ocarinas, lap steel guitar, fretless bass, su gzeng, zither, brass and clay dumbeks, tar, udu, talking drums, kendang A ''kendang'' or ''gendang'' (, , , Tausug language, Tausug/Bajau/Maranao language, Maranao: ''gandang'', Buginese language, Bugis: ''gendrang'' and Makassarese language, Makassar: ''gandrang'' o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nootropics (album)
''Nootropics'' is the second album released by Baltimore indie rock band Lower Dens. It was released April 30, 2012, on the Domino Recording Company’s Ribbon Music label, the band's first album on that label, its debut ''Twin-Hand Movement'' being released on Gnomonsong. ''Nootropics'' was recorded at the Key Club Recording Company in Benton Harbor, Michigan. It was produced by Drew Brown, an engineer who had assisted Nigel Godrich on several projects. The second track "Brains" was released as a single ahead of the album, and highlighted that week by Stereogum. Track listing # "Alphabet Song" – 5:28 # "Brains" – 5:07 # "Stem" – 2:06 # "Propagation" – 4:59 # "Lamb" – 3:43 # "Candy" – 3:20 # "Lion in Winter, Pt. 1" – 4:16 # "Lion in Winter, Pt. 2" – 3:36 # "Nova Anthem" – 5:28 # "In the End Is the Beginning" – 12:18 Personnel * Will Adams – Guitar * Geoff Graham – Bass, vocals * Jana Hunter– Vocals, guitar, synth A synthesizer (also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
