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Core concentricity
| Fiber Optic Glossary |
A measure of the relationship between the geometric center of the core of an optical fiber and the geometric center of the cladding, or how centered the core is
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Concentricity, английский
- In a wire or cable, the measurement of the location of the center of the conductor with respect to the geometric center of the circular insulation.
- The measurement of how well-centered the core is within the cladding.
- Conformance to a common center as, for example, the inner and outer walls of round tube.
Concentricity (bearings), английский
The uniformity of journal (or bearing) thickness measured in a plane normal to the axis of the journal; also used to describe the inside diameter axial exactness of a bore or the hole of the hose.
Core, английский
- Remaining wood after a veneer peeling operation is completed.
- Any portion of a cable over which some other cable component, such as a shield, jacket, sheath or armor, is applied.
- Центральная часть оптического волокна, изготовленная из стекла. коэффициент преломления сердцевины меньше, чем у оболочки
- The internal duct and filter media support.
- Coherent-on-receive
- Common operational research equipment
- The central part of an optical fiber that carries light. the light-conducting portion of a fiber, defined by its higher refraction index. the core is the center of a fiber, surrounded by concentric cladding of lower refractive index.
- (1) a central strand around which other wires are wound in a core temple, (2) wire reinforcement imbedded in plastic temples (core wire).
- N сердцевина, ядро vocabulary
- Сердцевина; ядро (клетки, фага) или коровый, сердцевинный (антиген); 16 элемент структуры вируса или клетки.
- Сердцевина; ядро (клетки, фага) или коровый, сердцевинный (антиген);
- Заполнитель
- A cylindrical sample of rock and/or the process of cutting such a sample by use of an annular (hollow) drill bit. sometimes incorrectly called bit core.
- The central portion of a bit mold, that forms the inside diameter of the bit.
- A cone or inverted v-shaped stub of rock left in the bottom of a drill hole by a cone noncoring bit.
- In rough set theory, the core attributes are those attributes that are in the intersection of all reducts. neither the reducts nor the minimal reducts of a set of attributes are necessarily unique. the core attributes are those that appear in all reducts of an attribute set and must be contained in any reduced table. the remaining attributes in the set of (minimal) reducts must be selected on other criteria (e.g., smallest total number of attributes in the reduced table or best upper and lower approximations to some concept(s)). see also: indiscernable, lower approximation, reduct, rough set theory, upper approximation.
- 1) part of the earth more than 2900 km beneath ocean surface, with a
- Controlled requirements expression
- Requirements for atm working positions
- (1) in manufacturing, specially formed material inserted in a mold to shape the interior of another part of a casting that cannot be shaped as easily by the pattern. (2) in a heat treated ferrous alloy, the inner portion that is softer than the outer portion or case.
- A cylindrical sample taken from a formation for geological analysis. usually a conventional core barrel is substituted for the bit and procures a sample as it penetrates the formation.
Core, английский
A mold component which forms the internal surface of the closure. the core also includes the threads.
Core, английский
Core (1), английский
Core (2), английский
Core (inrev style), английский
A fund which invests mainly in income producing investments. the fund will use low leverage, have no or very low development exposure and generate a high proportion of return through income.
Core (mt), английский
In reference to an electromagnetic inspection, it is a laminated steel conductor located within the electrical winding of a hand-held yoke or probe. also, laminated steel conductor used in conjunction with a magnetizing coil to produce a stronger collapsing field in induced current magnetization of ring-shaped parts.
Core (rs style), английский
An account that includes a preponderance of core attributes; the account as a whole will have low leasing exposure and low leverage. a low percentage of noncore assets is acceptable. as a result, such portfolios should achieve relatively high-income returns and exhibit relatively low volatility.
Core activities, английский
Основная деятельность
Core analysis, английский
- The characteristics of the minerals contained in a specific section of a core sample as determined petrographically, by metallurgical treatments, and/or by chemical or cupelling methods. also called core assay, core values.
- As used by the petroleum industry, a study of a core sample to determine its water and oil content, porosity, permeability, etc.
- Laboratory analysis of a core sample to determine porosity, permeability, lithology, fluid content, angle of dip, geological age, and probable productivity of the formation.
Core application questionnaire, английский
A questionnaire used to gather key information about your organization to be used as a roadmap for building your performancepoint server application.
Core area, английский
Of a grille for an air diffuser, the total area within the outer edges of the outer opening through which air can pass.
Core array, английский
Ферритовая матрица
Core assay, английский
Sometimes used as a synonym for core analysis, but more commonly it infers that the mineral content of a core sample has been determined by fire methods.
Core assembly, английский
Core balance current transformer, английский
Core barrel, английский
- The hollow cutting tool of a core drill; consists of a section of pipe which has a carbide insert or diamond cutting edge. coreboard, brit. battenboard a wood-base panel used in plywood or laminated core constructions; the core, 1, to which faces are glued.
- A length of tubing, usually 10 feet long, designed to form the coupling unit between the core bit and reaming shell and the drill-rod string. it carries or contains the core produced until the core can be raised to the surface. the barrels are of single or double tubing and of swivel or rigid type.
- Колонковый набор со съемным керноприемником, обеспечивающий наиболее полный выход керна при бурении рыхлых, неуплотненных и сильно трещиноватых пород
- A length of pipe next to the cutting bit of a core drill and which contains
Core barrel stabilizer, английский
Стабилизатор колонковой трубы
Core basket, английский
Relationship, английский
- Отношение: соотношение; связь; взаимоотношение; взаимосвязь
- Отношение, степень родства
- A way in which someone or something is connected to another the incidence of the disease has a close relationship to the environment. he became withdrawn and broke off all relationships with his family.
- Зависимость, соотношение
- A connection between objects.
- A logical connection between entities.
- A smartart graphic layout type that includes layouts designed to illustrate connections.
- An association established between common fields (columns) in two tables. a relationship can be one-to-one, many-to-many, or one-to-many.
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Interferometer, английский
- A measurement instrument that projects interference bands across the face of fiber optic connector. the bands are used to determine the centering, angle of apex offset and radius of curvature of the fiber optic connector
- A system containing two or more signals that are combined in phase to cause interference.
- An instrument that employs the interference of lightwaves to measure the accuracy of optical surfaces; it can measure a length in terms of the length of a wave of light by using interference phenomena based on the wave characteristics of light. interferometers are used extensively for testing optical elements during manufacture. typical designs include the michelson, twyman-green and fizeau interferometers.
Numerical aperture (na), английский
- A measure of the angular acceptance for a fiber, approximately the sine of the half-angle of the acceptance cone. the na of an optical fiber defines a characteristic of the fiber in terms of its acceptance of incoming light
- The sine of half the angle over which a fiber can accept light. strictly speaking, this is multiplied by the refractive index of the medium containing the light, but for air the index is almost equal to 1. the light-gathering ability of a fiber; the maximum angle to the fiber axis at which light will be accepted and propagated through the fiber. na = sin a, where a is the acceptance angle. na also describes the angular spread of light from a central axis, as in exiting a fiber, emitting from a source, or entering a detector.
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