Doublet is a word derived from the Latin ''duplus'', "twofold, twice as much", and is used to indicate a pair of identical, similar, or related things.
Doublet may refer to:
Apparel
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Doublet (clothing)
A doublet (/ˈdʌblɪt/; derived from the Ital. ''giubbetta'') is a man's snug-fitting jacket that is shaped and fitted to the man's body. The garment was worn in Spain, and spread to the rest of Western Europe, from the late Middle Ages up to ...
, a man's snug-fitting buttoned jacket that was worn from the late 14th century to the mid 17th century
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Doublet (Highland dress), a formal jacket worn with Scottish highland dress
Games
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Doublet (dominoes), a domino tile in which both ends have the same value
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Doublets (game)
Doublets or queen's game is an historical English tables game for two people which was popular in the 17th and 18th centuries. Although played on a board similar to that now used for backgammon, it is a simple game of hazard bearing little resemb ...
, old English tables game in the same family as Backgammon
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Word ladder
Word ladder (also known as Doublets, word-links, change-the-word puzzles, paragrams, laddergrams, or word golf) is a word game invented by Lewis Carroll. A word ladder puzzle begins with two words, and to solve the puzzle one must find a chain of o ...
or "doublets", a word game invented by Lewis Carroll
Science and technology
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Doublet (computing)
In computing and telecommunications, a unit of information is the capacity of some standard data storage system or communication channel, used to measure the capacities of other systems and channels. In information theory, units of information a ...
, a group of 16 bits in computing
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Doublet (lens)
In optics, a doublet is a type of lens made up of two simple lenses paired together. Such an arrangement allows more optical surfaces, thicknesses, and formulations, especially as the space between lenses may be considered an "element". With a ...
, a type of lens, made up of two stacked layers with different refractive indices
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Doublet (linguistics)
In etymology, two or more words in the same language are called doublets or etymological twins or twinlings (or possibly triplets, and so forth) when they have different phonological forms but the same etymological root. Often, but not always, t ...
, two or more words of the same language that come from the same root
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Doublet (potential flow), fluid flow due to a source–sink combination
*Doublet, or ''
dimeresia howellii'', a tiny flowering plant
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Doublet earthquake
__NOTOC__
In seismology, doublet earthquakes – and more generally, multiplet earthquakes – were originally identified as multiple earthquakes with nearly identical waveforms originating from the same location. They are now characterized as sin ...
, two earthquakes associated by space and time
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Doublet state
In quantum mechanics, a doublet is a composite quantum state of a system with an effective spin of 1/2, such that there are two allowed values of the spin component, −1/2 and +1/2. Quantum systems with two possible states are sometimes called tw ...
, a state in quantum physics of a system with a spin of
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Unit doublet
In mathematics, the unit doublet is the derivative of the Dirac delta function. It can be used to differentiate signals in electrical engineering: If ''u''1 is the unit doublet, then
: (x * u_1)(t) = \frac
where * is the convolution
In ...
, in mathematics, the derivative of the Dirac delta function
Other uses
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Doublet (horse), (b. 1963 - †.1974), a thoroughbred gelding
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Doublet (lapidary), an assembled gem composed in two sections, such as a garnet overlaying green glass
*Doublet, in
textual criticism
Textual criticism is a branch of textual scholarship, philology, and of literary criticism that is concerned with the identification of textual variants, or different versions, of either manuscripts or of printed books. Such texts may range in da ...
, two different narrative accounts of the same actual event
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Pierre Jean Louis Ovide Doublet (1749–1824), French politician and writer affiliated with the Order of Malta
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Michel Doublet (1939–2022), French politician.
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