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Fresnel zone
| Глоссарий по ультразвуковому контролю и испытаниям |
See near field.
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Зона френеля, русский
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Fresnel, английский
A thinner, lighter, "stepped" version of a plano-convex lens. also, a spot light with such a lens. tip: silent "s," sil vous plait.
Fresnel equations, английский
Equations for the amplitude coefficients of transmission and reflection at the interface between two transparent homogeneous media
Fresnel field, английский
See near field.
Fresnel fringes, английский
Дифракционные полосы френеля (класс дифракционных полос, образующихся в тех случаях, когда источник освещения и проекционный экран находятся на конечном расстоянии от края полосы дифракции)
Fresnel lens, английский
- Numerous small lenses assembled to form a single large lens of short focal length. developed in the early 19th century by french physicist a.j. fresnel (pronounced freynel) originally used in searchlights, it was later adapted for the mirror landing aid.
- An optical device that focuses light like a magnifying glass; concentric rings are faced at slightly different angles so that light falling on any ring is focused to the same point.
- An optical device that focuses light like a magnifying glass; concentric rings
Fresnel lens optical landing system, английский
Оптическая система посадки с линзами френеля
Fresnel number, английский
A parameter determining the regime of diffraction effects
Fresnel prism, английский
A series of narrow prisms molded into one piece of soft plastic that has the effect of one prism. these prisms are cut and applied directly to the lens surface. they are an alternative when prism is required and a standard lens can not be ground or when lenses will be too thick and heavy, if surfaced. in addition, they can be removed without remaking a lens when a patient’s prism correction is undergoing several changes over a period of time.
Fresnel reflection, английский
- Reflection of a portion of the incident light at a planar interface between connectors, mechanical splices, or two homogeneous media having different refractive indices
- Френелевское отражение
Fresnel reflection loss, английский
Reflection losses at the ends of fibers caused by differences in the refractive index between glass and air. the maximum reflection caused by a perpendicular air-glass interface is about 4% or about -14 db.
Fresnel zone (ut), английский
Zone, английский
- The section of a building that is served by one heating or cooling loop because it has noticeably distinct heating or cooling needs. also, the section of property that will be watered from a lawn sprinkler system.
- Зона
- A type of defense that assigns each defender to a particular area in front of or around his team`s goal in which he is responsible for marking any attacker that enters; often used in youth league games but rarely in professional competition.
- An area of the body
- See belt.
- [1] one of seven longitudinal belts into which geographers divide the globe. a central equatorial or torrid zone is bordered by tropical zones, followed by temperate zones and, finally, polar or frigid zones. [2] one of twenty-four latitudinal time zones, each covering 15° of longitude and centered on a meridian (except for adjustments to accommodate political boundaries). [3] to be “in the zone” means eligible for promotion.
- An area established and identified for specific reason, typically because a hazard exists.
- A business division of network rail with responsibility for the assets within a geographical area. during 2003, the zonal structure was replaced by a regional structure, and zones became regions. during 2004 the regions were restructured into territories
Zone, английский
Zone, французский
Zone (area, английский
Zone 1, английский
The geo within the azure region taxonomy that covers the geographic locations north america and europe with the respective regions.
Zone 2, английский
The geo within the azure region taxonomy that covers the geographic locations asia pacific, japan, latin america and middle east / africa with the respective regions.
Zone 3, английский
The geo within the azure region taxonomy that covers the geographic location of brazil.
Zone a proteger, французский
Zone active de la semelle de fondation, французский
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Interface synchronization, английский
See interface triggering.
Fresnel field, английский
See near field.
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