| 单词 | optic discs |
| 释义 | optic /opˈtik/ or optical /-ti-kl/adjective
ORIGIN: Gr optikos optic, from optos seen opˈtic noun
opˈtically adverb optician /op-tishˈən/ noun
opˈtics singular noun The science of light optoacousˈtic adjective Relating to or combining both vision and hearing optoelectronˈic adjective
optoelectronˈics singular noun The study or use of devices involving the interaction of electronic and light signals, or the conversion of one to the other (also optronˈics) optolˈogist noun An optician optolˈogy noun optomˈeter noun An instrument for testing vision optometˈric or optometˈrical adjective optomˈetrist noun
optomˈetry noun
opˈtophone noun An instrument that translates printed characters into arbitrary sounds, and so enables the blind to read ordinary type optical activity noun (physics) The ability of certain chemical compounds to rotate the plane of polarization of an already polarized beam of light in one direction or the other optical art same as op art optical character reader noun (computing) A light-sensitive device for inputting data directly to a computer by means of optical character recognition (abbrev OCR) optical character recognition noun (computing) The scanning, identification and encoding of printed characters by photoelectric means (abbrev OCR) optical computing noun The technique of controlling the computer by pulses of light instead of by electronic means optical disk noun (computing) A disk that can be read from and often written to by a laser optical-electronic device noun (physics) An instrument used to locate weakly radiating sources by detecting their infrared emission optical fibre noun A thin strand of glass through which light waves may be transmitted, used eg in some communications systems, fibre optics, etc optical illusion noun
optical maser noun Laser optical microscope, telescope noun A microscope or telescope that operates by the direct perception of light from the object viewed, as opposed to an electron microscope or radio telescope optical pumping noun (physics) The act of stimulating a population inversion for a particular energy transition in a laser using an external light source of suitable frequency optical spectrum noun (physics) The visible radiation emitted from a source separated into its component frequencies optical splitter noun (telecommunications) A device for separating signals into two or more channels, eg optical fibres optical tweezers plural noun An instrument used to manipulate microscopic objects by means of highly focused laser light optic axis noun
optic disc noun The blind spot of the eye optic lobe noun The part of the mid-brain concerned with sight optic nerve noun The second cranial nerve, responsible for the sense of vision, which transmits information from the retina of the eye to the visual cortex of the brain optic thalamus noun (anatomy) An older name for thalamus |
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