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The first incarnations of glasses were made with the aim of providing aid to reading. [ 8 ] Though innovations in pre-modern eyewear technology occurred in both Imperial China and the Inuit territories, which both invented early forms of sunglasses and goggles, [ 9 ] Venice and Northern Italy have historically been the place of consolidation ...
Man with glasses. A woman with glasses. Glasses, also known as eyeglasses or spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears for support.
In November 2005, venture firm Sequoia Capital invested an initial $3.5 million, [19] and Roelof Botha (a partner of the firm and former CFO of PayPal) joined the YouTube board of directors. In April 2006, Sequoia and Artis Capital Management invested an additional $8 million in the company, which had experienced significant growth in its first ...
Dunkley was born on August 21, 1939, in New York. [2] [3] Dunkley, who has a Master's degree in Physics, conducted research in human vision that led to his discovery that a 2-dimensional picture would appear as 3-dimensional if two points in a person's peripheral vision were blocked.
Edward Scarlett (1688 – 1743 in London) was an English optician and instrument maker, who first invented an eyeglass frame with earhooks in 1727. This frame is held by the nose and ears, at times the glasses were called in contrast to the nasal cannula and temples because they had short straps that pressed on the temple.
Since the 1930s, sunglasses have been a popular fashion accessory, [2] especially on the beach. The American Optometric Association recommends wearing sunglasses that block ultraviolet radiation (UV) whenever a person is in the sunlight [3] to protect the eyes from UV and blue light, which can cause several serious eye problems.
Ibn al-Haytham (Alhacen) wrote about the effects of pinhole, concave lenses, and magnifying glasses in his 11th century Book of Optics (1021 CE). [ 46 ] [ 48 ] [ 49 ] The English friar Roger Bacon , during the 1260s or 1270s, wrote works on optics, partly based on the works of Arab writers, that described the function of corrective lenses for ...
[2] [3] Opto-mechanical spectacles allow focus control by the wearer via movement of a small slider located on top of the bridge. The user adjusts the lens for optical clarity at the desired distance. [ 4 ]