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Birefringence
| Glossary Of Laser Terminology |
- The phenomenon of double refraction, or the polarization dependence of the refractive index in a medium
- Двойное лучепреломление
- An optical term meaning double refraction, and used in examination of manufactured fibers to measure the degree of molecular orientation effected by stretching or drawing.
- Splitting of a light beam into two parts through a translucent material.
- Splitting of light into two beams, through double refraction, as it passes through specific types of translucent materials.
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Двойное лучепреломление, русский
, раздвоение световых лучей при прохождении через анизотропную среду (см. анизотропия), происходящее вследствие зависимости показателя преломления среды от направления напряженности электрического поля световой волны. световая волна в анизотропном веществе распадается на 2 волны - обыкновенную и необыкновенную с взаимно перпендикулярными плоскостями поляризации света.
Двулучепреломление, русский
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Phenomenon, английский
- 1. a fact or situation which can be observed 2. someone or something that is considered to be extraordinary and marvellous
- A condition with various possible causes in which the blood supply to the fingers and toes is restricted and they become cold, white and numb. also called dead man’s fingers, vasospasm [described 1862. after maurice raynaud (1834–81), french physician.] rbc rbc abbr red blood cell rcgp rcgp abbr royal college of general practitioners rcn rcn abbr royal college of nursing rcog rcog abbr royal college of obstetricians and gynaecologists rcp rcp abbr royal college of physicians
- In diabetes mellitus, a swing to a high level of glucose in the blood from an extremely low level, usually occurring after an untreated insulin reaction during the night. it is caused by the release of stress hormones to counter low glucose levels.
- Явление; эффект
Refraction, английский
- The tendency of wave crests to become parallel to bottom contours as waves move into shallower waters. this effect is caused by the shoaling process which slows down waves in shallower waters.
- The change of direction or speed of light as it passes from one medium to another.
- Преломление, рефракция
- Process by which the direction of a radiation is changed as a result of changes in its velocity of propagation.
- The change of direction of propagation of any wave, such as an electromagnetic wave, when it passes from one medium to another in which the wave velocity is different. the bending of incident rays as they pass from one medium to another (e.g., air to glass).
- The change of the propagation direction when a wave comes from one medium into another one
- The directional shift or "bending" of light rays as they leave one density medium and enter a different one. or why your legs are short in water when viewed from the air.
- The bending of light as it passes between materials of different refractive index.
- 1. a change of direction of light rays as they enter a medium such as the eye 2. the measurement of the angle at which the light rays bend, as a test to see if someone needs to wear glasses
- A test to determine the best prescription to correct a refractive error (myopia, hyperopia, astigmatism).
- The change in direction of a light ray or a sound ray in passing from one medium to another. refectory
- Рефракция
- An inflection of the rays of light: that property of the atmosphere which bends the rays of light in their passage to the eye from a different density, and causes the altitude of heavenly bodies to appear greater than it really is, especially near the horizon. (see terrestrial refraction.)
- A wave phenomenon involving change of direction or bending. when a wave of any kind— light, sound, sonar, radar, etc.—passes between materials of different density, its behavior changes as it exits the old medium. and encounters the new one. there is reflection off the boundary and transmission into the new medium. the transmitted wave undergoes refraction when it approaches the boundary obliquely.
- The bending of light as it passes through a diamond or gemstone.
- Bending of light waves, which occurs when a light wave passes from one medium to another
- Change in direction of an acoustic wave as the ultrasonic beam passes from one medium into another having different acoustic speeds. a change in both direction and mode occurs at acute angles of incidence. at small angles of incidence, the original mode and a converted mode may exist simultaneously in the second medium.
- Reorientation of radiation’s path by the medium through which it passes.
- Deflection of a wave due to a change in its speed as it passes from one material to another. see also refractometer.
- Change in direction of an acoustic wave as the ultrasonic beam passes from one medium into another having different acoustic speeds. a change in both direction and mode occurs at acute angles of incidence. at small angles of incidence, the original mode and a converted mode may exist simultaneously in the second medium.7
Polarization, английский
- Конструкция разъёма. в структурированных кабельных системах рекомендуется использование разъёмом, соответствующих стандарту we co. (western electric company). в отдельных случаях, когда необходимо обеспечить подключения телефонного оборудования к информац
- Поляризация
- A characteristic of the electric field on an electromagnetic wave in space. the directional aspects of a signal. signals can have circular or planar polarization. four types of polarization are used with satellites; horizontal, vertical, right-hand circular and left-hand circular. electromagnetic waves have the ability to vibrate in different radial directions. typically, satellite signal polarization is either horizontal or vertical. the signal coming from the satellite to the dish will either be vibrating along a horizontal or vertical plane. the receiving equipment must be adjusted to receive the correct polarization.
- Vibration of the electric field vector in specific direction perpendicular to the direction of propagation of the wave. also, restriction of the vibrations of the electromagnetic
- Alignment of the electric and magnetic fields that make up an electromagnetic wave; normally refers to the electric field. if all light waves have the same alignment, the light is polarized.
- When light penetrates certain crystals the emergent light is different than the entrance light. the emergent light emitted by the crystal vibrates in only one direction.
Dependence, английский
- Зависимость (взаимосвязь, существующая между событием и последующей работой, которая означает, что событие должно свершиться до того, как начнется эта работа; точно такая же зависимость существует между работой и последующим событием)
- A state in which a person is addicted to a drug such as cannabis or alcohol but does not suffer physical effects if he or she stops taking it
- The fact of needing the support of something or someone such as a carer, nurse or doctor, or of being addicted to a drug
- Зависимость
- A set of attributes is said to be dependent if the state of a subset of the attributes affects the (distribution of) the state of the remaining attributes. for two variables, the attributes x and y are dependent if pr(x y) pr(x)pr(y), where pr(.) is a probability measure. if the converse holds (pr(x y)= pr(x)pr(y)), then the attributes are said to be independent.
- The state in which one entity relies upon specific hardware, software, or specific events for its own definition or functionality.
Refractive, английский
Examination, английский
- Обследование
- Экспертиза; проверка; рассмотрение (оценка патентоспособности заявки на патент, производимая патентным ведомством)
- 1. an act of looking at someone or something carefully from the examination of the x-ray photographs, it seems that the tumour has not spread. 2. the act of looking at someone to find out what is wrong with him or her the surgeon carried out a medical examination before operating. 3. a written or oral test to see if a student is progressing satisfactorily (note: in this sense, often abbreviated to exam.)
- An examination of a dead body by a pathologist to find out the cause of death the post mortem showed that he had been poisoned. abbr pm. also called autopsy
- A searching by, or cognizance of, a magistrate, or other authorized officer. now strict in navy and army.
- Проверка; исследование; рассмотрение
- The checking of a taxpayer`s tax return, accounts, self-assessment calculations, etc. the process may or may not include an audit of the taxpayer`s own books.
- Осмотр; освидетельствование, обследование; исследование, проверка, контроль
- Изучение
- The study of a patent application by a patent office examiner to determine whether or not an invention can be patented and whether the application complies with all the legal requirements (including formal requirements). depending on issues raised in the resulting examination report, amendment of the patent application may be required.
- Process of testing materials, interpreting and evaluating test indications to determine if the test object meets specified acceptance criteria.1
Manufactured, английский
Orientation, английский
- A description of the manner in which the functional pattern is to be viewed.
- The act or process of setting a diamond in the crown of a bit in such an attitude that one of its hard vector planes will come in contact with the rock and be the surface that cuts or abrades it.
- As used in borehole surveying and directional drilling practice, "orientation" refers to the method and procedure used in placing an instrument or tool, such as a deflection wedge, in a drilled hole so that its directional position, bearing, or azimuth is known.
- Placement with respect to the cardinal directions, n, s, e, w; azimuth is the measure of orientation from north.
- In linear polymeric structures, the degree of parallelism of the chain molecules.
- The alignment of an item, such as a control.
- The direction a publication will be printed on a sheet of paper. you can choose either portrait, which is the taller-than-wide orientation, or landscape, which is the wider-than-tall orientation.
- Position of a discontinuity or part or surface in relation to the test surface of the article or ultrasonic beam.
- Angular relationship of a surface, plane, discontinuity, or axis to a reference plane or surface. p
- Angular relationship of a surface, plane, discontinuity or axis to a reference plane or surface.7,21
- Orientation is the process of bringing employees up to speed on organisational policies, job roles and responsibilities
- Orientation is a process that new employees go through to familiarize themselves with the company, people and policies of the business.
- Introducing new hires to the organization and its policies, benefits and culture. training and familiarization with each department are sometimes included.
Stretching, английский
Растяжение; растягивание, вытягивание; натяжение; преднапря- жение
Translucent, английский
- An object, material or vapor that transmits and diffuses light but not clear images. examples: frost gel and dense smoke. tip: use some rim light or back light.
- (1) pertaining to a medium which transmits light diffusely, so that objects viewed through it are not clearly distinguished. (2) transmitting light but causing sufficient diffusion to eliminate perception of distinct images.
- Descriptive of a material that transmits light but diffuses it sufficiently so that an image cannot be seen through the material clearly.
- Просвечивающий
- Светопрозрачный; полупрозрачный; просвечивающий
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Mode hopping, английский
The phenomenon that a laser exhibits sudden jumps of optical frequency, which are associated with transitions between different modes of its resonator
Spectral phase, английский
The phase of the electric field in the frequency domain
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