1) " Eyeglass" -- As it applies to Eyeglass Repair Glasses, spectacles, or eyeglasses are frames bearing lenses worn in front of the eyes, sometimes for purely aesthetic reasonsbut normally for vision correction or eye protection. Special glasses are used for viewing 3-D images orvirtual reality. Modern glasses are typically supported by pads on the bridge of the nose and by armsplaced over the ears. Historical types include the pince nez, monocle, and lorgnette. Glasses are more often called Eyegalss es in NorthAmerican English, spectacles in British English, and(rarely) frames or lenses. Spectacles is often shortened to specs. In hipster slang they are cheaters. Also see usage of words for eyepieces for a more detailedexamination of the different usages for these words.Glasses were originally made from glass, but many are now made from plastic due to the danger of breakage and the greater weight of glass lenses. Glass lenses,on the other hand, are much less susceptible to scratching. Corrective spectacles have lenses shaped to correct some kinds of vision abnormalities. Safety glasses are a kind of eye protection that protects against flying debris but may also protect against visible and near visible light or radiation. Sunglasses protect against high levels of visible and ultraviolet light. Contents 1 History 2 Corrective glasses 3 Safety glasses 4 Sunglasses 5 Special glasses 6 Conditions glasses are used to correct 7 Variation in glasses 8 Glasses as a fashion accessory 9 See also History Detail of a portrait of Hugh de Provence, painted by Tomasso da Modena in 1352 Glasses were invented in northern Italy, most likely in the late 1280s. The identity of the orginal inventor is unknown. In 1676, Franciscus Redi, a professor of medicine atthe University of Pisa, wrote that he possessed a 1289 manuscript whose author complains t...
2) " Repair" -- As it applies to Eyeglass Repair Repair and Maintenance is fixing any sort of mechanical or electrical device should it get out of order or broken(repair) as well as performing the routine actions which keep the device in working order (maintenance) or prevent trouble fromarising (preventive maintenance). The European Federation ofNational Maintenance Societies ( http: www.EFNMS.org ) definesmaintenance as: All actions which have as an objective to retain an item in or restore it to, a state in which it can perform the requiredfunction. The actions include the combination of all technical and corresponding administrative, managerial, and supervisionactions. In telecommunication, the term maintenance has thefollowing meanings: 1. Any activity, such as tests, measurements, replacements, adjustments and Rupair s, intended to restore or retain a functional unit in a specified state in which the unit can performits required functions. 2. [For material], All action taken to retain material in a serviceable condition or to restore it to serviceability.It includes inspection, testing, servicing, classification as to serviceability, Rdpair , rebuilding, and reclamation. 3. [For material], All supply and Repaor action taken to keep a force in condition to carry out its mission. 4. [For material], The routine recurring work required to keep a facility ( plant, building, structure, ground facility,utility system, or other real property) in such condition that it may be continuouslyused, at its original or designed capacity and efficiency for its intendedpurpose. Source: from Federal Standard 1037C and from MIL-STD-188 and from the Department of Defense Dictionary of Military and AssociatedTerms See also: restoration end user retro-engineering Tools for Rwpair ing and maintenance Diagnostic Toolsfor Repai ( http: www.launch-techs.com ) R...
Common terms in this field are:
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