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Modern glasses, the most dominant form of eyewear. Eyewear is a term used to refer to all devices worn over both of a person's eyes, or occasionally a single eye, for one or more of a variety of purposes. Though historically used for vision improvement and correction, eyewear has also evolved into eye protection, for fashion and aesthetic ...
German half-hour sand glass, first quarter of the 16th century, bronze-gilt and silver-gilt, height: 8.3 cm, diameter: 8.4 cm, Metropolitan Museum of Art (New York City) A winged hourglass as a literal depiction of the Latin phrase tempus fugit ("time flies") An hourglass in use, 2015
The Glasses Apostle by Conrad von Soest (1403) Seated apostle holding lenses in position for reading. Detail from Death of the Virgin, by the Master of Heiligenkreuz, c. 1400 –1430 (Getty Center). French Empire gilt scissors glasses (with one lens missing), c. 1805
The tower clock of Norwich Cathedral constructed c. 1273 (reference to a payment for a mechanical clock dated to this year) is the earliest such large clock known. The clock has not survived. [95] The first clock known to strike regularly on the hour, a clock with a verge and foliot mechanism, is recorded in Milan in 1336. [96]
1859 Helmsman's marine sandglass, in a four-column wood stand. A marine sandglass is a timepiece of simple design that is a relative of the common hourglass, a marine (nautical) instrument known since the 14th century (although reasonably presumed to be of very ancient use and origin).
Enter glasses. "If the 'locked' focus of your eye is distance, you need glasses for near," Dr. See says. "If the 'locked' focus is near—myopia or nearsightedness—you will need glasses for ...
The remains of prehistoric humans and even Egyptian mummies from 5,000 years ago have displayed evidence of having had TB. In the 1800s, TB was one of leading causes of death in Europe, but ...
Zero hour (German: Stunde Null, pronounced [ˈʃtʊndə nʊl]) is a term referring to the capitulation at midnight on 8 May 1945 and the immediately following weeks in Germany. [1] It marked the end of World War II in Europe and the start of a new, non-Nazi Germany . [ 2 ]