adjective
COLLOCATIONS FROM OTHER ENTRIES
optical character recognition
optical fibre
optical illusion
optical properties
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These minerals have similar optical properties.
COLLOCATIONS FROM CORPUS
■ NOUN
character
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This can be on-line or off-line recognition of hand-printed characters , or of machine-printed characters using optical character recognition.
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This could include word processing, a database, case management and optical character recognition.
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It is distinguished by an X-Windows/Motif interface, and its ability to integrate with optical character readers and document processors.
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One example is the method of recognition using template matching which is applied in both speech recognition and optical character recognition.
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Another growing use for scanners is as optical character readers.
density
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Even fraction of a second, the optical density of the nucleus is measured and stored in the computer's memory.
disc
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The large memory requirements suggest the use of optical disc storage.
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Moreover, these market figures only take account of multi-media delivered on a stand-alone optical disc platform.
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Today, portable optical disc players are also emerging.
disk
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Once documents have been scanned and indexed, they have to be saved to optical disk .
fibre
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It also explains why it is virtually certain that Britain's main trunk lines will rely on optical fibre .
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You will also need a length of optical fibre .
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An optical fibre uses total internal reflection to carry a light beam over long distance and around corners.
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It is interesting to examine the optical fibre before using it in the communications system.
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IskraTEL specialists are currently laying optical fibre cables to connect the city's exchanges.
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Next came an all-optical experiment using an optical fibre as nonlinear medium { 32 }, demonstrating 12 and chaos.
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The obstacle to optical fibre communication is lift loss due to impurities in the glass.
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It is not the purpose here to explain exactly how an optical fibre works in terms of total internal reflection.
fibres
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In telecommunications, optical fibres made of glass will gradually replace the traditional copper cables in new equipment.
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Mrs Thatcher's panel of advisers recommend against linking homes with optical fibres on the grounds of cost.
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The comparable figure, it said, for optical fibres was nearly £2000.
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But lasers have snags: even with optical fibres , lasers can not reach every part of the body.
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In their report, the prime minister's advisers did not come out against optical fibres altogether.
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Despite the cost, Telecom is now irrevocably committed to optical fibres in all its new telephone speech and data trunk lines.
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The recent enthusiasm for optical fibres is the result of dramatic advances in optical purity.
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The company has been adept at moving into high-margin businesses such as laboratory services, optical fibres and speciality materials.
illusion
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For once, the optical illusion experienced by sailors leaving port seemed apt.
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This is called an optical illusion , which means that your eyes trick you into seeing something that is not really there.
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Shiseido's Wrinkle Smoothing Concentrate works on the principle of an optical illusion .
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Even better, the full Coliseum will not be an optical illusion .
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It was probably an optical illusion , but the place seemed to be flying more eagles and swastikas than stars and stripes.
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Most argued that the canals were optical illusions , and that Mars was a cold, waterless, radiation-baked world.
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This is an optical illusion in which the diagram of a skeleton cube appears to the observer in either of two orientations.
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Even knowing what he did, Kirov found it difficult to see how the optical illusion had been managed.
instrument
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The first questions Wien asked were related to the resolving power of optical instruments .
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Even optical instruments , such as perspective machines, the cameraobscura and the camera lucida, were used sparingly.
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This level of magnification shows the eye as an optical instrument .
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There is, however, one classical restriction which we must take into account, namely the resolving power of optical instruments .
microscope
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However, the dimensions of the smallest circuit-parts will soon have shrunk beyond the limit that optical microscopes can resolve.
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To be seen clearly under an optical microscope , cell tissues often have to be stained to increase contrast.
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In his own private laboratory, he worked with ultraviolet radiation at the ultimate resolution of the optical microscope .
property
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For example, distinction between calcite and dolomite is difficult because they have similar optical properties .
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Many rocks are composed of a high proportion of echinoderm debris, which is easily recognized because of this optical property .
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Indeed, their optical properties reflect a non-biological origin.
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She remained there for four years, during which time she conducted researches on the optical properties of organic compounds.
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This absorption band comes from the spherical geometry of the particles and the particular optical properties of the gold.
system
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In the optical system two slotted discs fitted to the end of the rollers.
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The latter show promise in optical system implementations.
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Again there are various optical systems .
EXAMPLES FROM OTHER ENTRIES
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Optical bar-code scanners have revolutionized the postal system.
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optical distortions caused by poor quality lenses
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They sell optical equipment such as cameras and telescopes.
EXAMPLES FROM CORPUS
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But lasers have snags: even with optical fibres, lasers can not reach every part of the body.
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Consider a photon which is polarised parallel to the optical axis of P,.
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For this reason the phase control signals to these upper base drives are often transmitted via a stage of optical isolation.
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However, the dimensions of the smallest circuit-parts will soon have shrunk beyond the limit that optical microscopes can resolve.
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It also explains why it is virtually certain that Britain's main trunk lines will rely on optical fibre.
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One projected use is for optical recognition experiments.
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Polished surfaces give the best optical resolution, and the double polished thin sections described in Chapter 4 are ideal.
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This, thought Robert, was something of an optical achievement on her part.