What Is The History Of Spectacles?
The inventor of first pair of spectacles is totally unknown. Roger Bacon magnified writing by placing part of a sphere of glass on a book in the year 1266. In a picture of 1352 a portrait of Cardinal Ugone he is shown wearisome two framed lenses with their handles riveted as one and fixed over the eyes. So, spectacles must have invented by somebody between 1266 and 1352. The need for spectacles was created as the printed books began to appear. During the 16th century most of the spectacles were made in north Italy and south Germany. By 1629 Charles 1 of England granted a charter to the spectacles makers’ guild. Bifocals were invented by Benjamin Franklin in 1784. Now a day spectacles of all types have many, many uses. Dark glasses are used as sunglasses, colour lenses are often used to detect camouflage and red lenses are used by photographers. Skiers, aviators, polar explorers, mountain climbers also wear lenses that absorb ultraviolet lights. The list of spectacles made to do specifi
