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Triplet
A triplet is a set of three items, which may be in a specific order, or unordered. It may refer to: Science * A series of three nucleotide bases forming an element of the Genetic code * J-coupling as part of Nuclear magnetic resonance spectroscopy * Opal in preparation to be a gemstone * Spin triplet in quantum mechanics — as in triplet oxygen, or triplet state in general * Tuple of length 3 in mathematics * Each of the children born in a three-child multiple birth; identical or fraternal, as are twins and quadruplets and quintuplets Technologies * Photography triplet or paint triplet * Triplet lens, optical device consisting of three single lenses * Tandem bicycle with three seats Other uses * In music, a tuplet of three successive notes of equal duration * ''The Triplets'', a Spanish children's book * The Triplets (band), a Latin pop group * A triplet, a kind of assembled gem * Triplets, the multiple birth of three children, whether identical or fraternal as are twins, qua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiple Birth
A multiple birth is the culmination of one multiple pregnancy, wherein the mother gives birth to two or more babies. A term most applicable to vertebrate species, multiple births occur in most kinds of mammals, with varying frequencies. Such births are often named according to the number of offspring, as in ''twins'' and ''triplets''. In non-humans, the whole group may also be referred to as a ''litter'', and multiple births may be more common than single births. Multiple births in humans are the exception and can be exceptionally rare in the largest mammals. A multiple pregnancy may be the result of the fertilization of a single egg that then splits to create identical fetuses, or it may be the result of the fertilization of multiple eggs that create fraternal ("non-identical") fetuses, or it may be a combination of these factors. A multiple pregnancy from a single zygote is called ''monozygotic'', from two zygotes is called ''dizygotic'', or from three or more zygotes is calle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triplets
A multiple birth is the culmination of one multiple pregnancy, wherein the mother gives birth to two or more babies. A term most applicable to vertebrate species, multiple births occur in most kinds of mammals, with varying frequencies. Such births are often named according to the number of offspring, as in ''twins'' and ''triplets''. In non-humans, the whole group may also be referred to as a ''litter'', and multiple births may be more common than single births. Multiple births in humans are the exception and can be exceptionally rare in the largest mammals. A multiple pregnancy may be the result of the fertilization of a single egg that then splits to create identical fetuses, or it may be the result of the fertilization of multiple eggs that create fraternal ("non-identical") fetuses, or it may be a combination of these factors. A multiple pregnancy from a single zygote is called ''monozygotic'', from two zygotes is called ''dizygotic'', or from three or more zygotes is calle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuplet
In music, a tuplet (also irrational rhythm or groupings, artificial division or groupings, abnormal divisions, irregular rhythm, gruppetto, extra-metric groupings, or, rarely, contrametric rhythm) is "any rhythm that involves dividing the beat into a different number of equal subdivisions from that usually permitted by the time-signature (e.g., triplets, duplets, etc.)" This is indicated by a number, or sometimes two indicating the fraction involved. The notes involved are also often grouped with a bracket or (in older notation) a slur. The most common type of tuplet is the triplet. Terminology The modern term 'tuplet' comes from a rebracketing of compound words like quintu(s)-(u)plet and sextu(s)-(u)plet, and from related mathematical terms such as "tuple", "-uplet" and "-plet", which are used to form terms denoting multiplets (''Oxford English Dictionary'', entries "multiplet", "-plet, ''comb. form''", "-let, ''suffix''", and "-et, ''suffix''1"). An alternative modern term, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetic Code
The genetic code is the set of rules used by living cells to translate information encoded within genetic material ( DNA or RNA sequences of nucleotide triplets, or codons) into proteins. Translation is accomplished by the ribosome, which links proteinogenic amino acids in an order specified by messenger RNA (mRNA), using transfer RNA (tRNA) molecules to carry amino acids and to read the mRNA three nucleotides at a time. The genetic code is highly similar among all organisms and can be expressed in a simple table with 64 entries. The codons specify which amino acid will be added next during protein biosynthesis. With some exceptions, a three-nucleotide codon in a nucleic acid sequence specifies a single amino acid. The vast majority of genes are encoded with a single scheme (see the RNA codon table). That scheme is often referred to as the canonical or standard genetic code, or simply ''the'' genetic code, though variant codes (such as in mitochondria) exist. History Effor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triplet Lens
A triplet lens is a compound lens consisting of three single lenses. The triplet design is the simplest to give the required number of degrees of freedom to allow the lens designer to overcome all Seidel aberrations. The three lenses may be cemented together, as in the Steinheil triplet or the Hastings triplet. Or a triplet may be designed with three spaced glasses, as in the Cooke triplet. The former has the advantage of higher optical throughput due to fewer air-glass interfaces, but the latter provides greater flexibility in aberration control, as the internal surfaces are not confined to have the same radii of curvature. Jewellers' loupes typically use a triplet lens. See also *Doublet (lens) *Achromatic lens *Apochromatic lens * The five Seidel aberrations *Mangin mirror In optics, a Mangin mirror is a negative meniscus lens with the reflective surface on the rear side of the glass forming a curved mirror that reflects light without spherical aberration if certain con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Triplets Of Belleville
''The Triplets of Belleville'' (french: Les Triplettes de Belleville) is a 2003 animated comedy film written and directed by Sylvain Chomet. It was released as ''Belleville Rendez-vous'' in the United Kingdom. The film is Chomet's first feature film and was an international co-production among companies in France, Belgium, Canada and the United Kingdom. The film features the voices of Lina Boudreault, Mari-Lou Gauthier, Michèle Caucheteux, Jean-Claude Donda, Michel Robin, and Monica Viegas. There is little dialogue; much of the narrative is conveyed through song and pantomime. It tells the story of Madame Souza, an elderly woman who goes on a quest to rescue her grandson Champion, a Tour de France cyclist, who has been kidnapped by the French mafia for gambling purposes and taken to the city of Belleville (an amalgam of Paris, New York City, Montreal and Quebec City). She is accompanied by Champion's loyal and obese hound, Bruno, and joined by the Triplets of Belleville, music h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photography Triplet
A photography or paint triplet is set of three photos or paints usually related to one event or developing a theme or story. Many art photographers use triplets to describe more complicated story or to attract the viewer by showing related prints together. Some art critics like triplets because the best photographers are able to describe as complicated story as in simple documentary movie. Some triplets (called ''clone triplets'') are the same image repeated with slight alterations (for example toned to different colors, or mixed color and monochromatic photos) or, more rarely, seemingly identical images with minor, detailed changes. Triplets are usually framed together or, in galleries, mounted near each other on the wall. Triplets are very often used on postcards. When four photos or paints are together, it is called photography quadruplet. Multiple images chained together are called photography fold. Ordering and time line Images are usually located from left to right wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Triplets
The Triplets ( ca, Les tres bessones; es, Las tres mellizas; oc, Es tres bessones) are three fictional characters (Anna, Teresa and Helena) created by Spanish illustrator Roser Capdevila. The Triplets were created in 1983, based on Capdevila's own daughters, three actual triplets born in 1969. The stories were immediately successful and began publishing in many countries. In 1985 a new character, the "Bored Witch" (''La Bruixa Avorrida'') was added to the plots to form a collection of classical stories, "The Triplets and (...)". In 1994, television producer Cromosoma and the Catalan TV corporation Televisió de Catalunya adapted the stories to make an animated series based on the books. It became very successful and profitable and led to the production of a second series with the Bored Witch as the main character, together with France 3, Canal J and Storimages. By 2004, ''The Triplets'' series consisted of 104 episodes, while ''The Bored Witch'' reached 52. They have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triplet State
In quantum mechanics, a triplet is a quantum state of a system with a spin of quantum number =1, such that there are three allowed values of the spin component, = −1, 0, and +1. Spin, in the context of quantum mechanics, is not a mechanical rotation but a more abstract concept that characterizes a particle's intrinsic angular momentum. It is particularly important for systems at atomic length scales, such as individual atoms, protons, or electrons. Almost all molecules encountered in daily life exist in a singlet state, but molecular oxygen is an exception. At room temperature, O2 exists in a triplet state, which can only undergo a chemical reaction by making the forbidden transition into a singlet state. This makes it kinetically nonreactive despite being thermodynamically one of the strongest oxidants. Photochemical or thermal activation can bring it into the singlet state, which makes it kinetically as well as thermodynamically a very strong oxidant. __TOC__ Two spin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Hurwitz Triplet
In the mathematical theory of Riemann surfaces, the first Hurwitz triplet is a triple of distinct Hurwitz surfaces with the identical automorphism group of the lowest possible genus, namely 14 (genera 3 and 7 each admit a unique Hurwitz surface, respectively the Klein quartic and the Macbeath surface). The explanation for this phenomenon is arithmetic. Namely, in the ring of integers of the appropriate number field, the rational prime 13 splits as a product of three distinct prime ideals. The principal congruence subgroups defined by the triplet of primes produce Fuchsian groups corresponding to the triplet of Riemann surfaces. Arithmetic construction Let K be the real subfield of \mathbbrho/math> where \rho is a 7th-primitive root of unity. The ring of integers of ''K'' is \mathbbeta/math>, where \eta=2\cos(\tfrac). Let D be the quaternion algebra, or symbol algebra (\eta,\eta)_. Also Let \tau=1+\eta+\eta^2 and j'=\tfrac(1+\eta i + \tau j). Let \mathcal_\mathrm=\mathbbetai,j,j']. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Magnetic Resonance Spectroscopy
Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique to observe local magnetic fields around atomic nuclei. The sample is placed in a magnetic field and the NMR signal is produced by excitation of the nuclei sample with radio waves into nuclear magnetic resonance, which is detected with sensitive radio receivers. The intramolecular magnetic field around an atom in a molecule changes the resonance frequency, thus giving access to details of the electronic structure of a molecule and its individual functional groups. As the fields are unique or highly characteristic to individual compounds, in modern organic chemistry practice, NMR spectroscopy is the definitive method to identify monomolecular organic compounds. The principle of NMR usually involves three sequential steps: # The alignment (polarization) of the magnetic nuclear spins in an applied, constant magnetic field B0. # The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opal
Opal is a hydrated amorphous form of silica (SiO2·''n''H2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Due to its amorphous property, it is classified as a mineraloid, unlike crystalline forms of silica, which are considered minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. The name ''opal'' is believed to be derived from the Sanskrit word (), which means 'jewel', and later the Greek derivative (), which means 'to see a change in color'. There are two broad classes of opal: precious and common. Precious opal displays play-of-color ( iridescence); common opal does not. Play-of-color is defined as "a pseudo chromatic optical effect resulting in flashes of colored light from certain minerals, as they are turned in white light." The internal structure of precious opal causes it to di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
