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An ornate brass door hinge A barrel hinge. A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation, with all other translations or rotations prevented; thus a hinge has one degree of freedom.
Jōmon pottery, Japanese Stone Age Trundholm sun chariot, Nordic Bronze Age Iron Age house keys Cave of Letters, Nahal Hever Canyon, Israel Museum, Jerusalem. The three-age system is the periodization of human prehistory (with some overlap into the historical periods in a few regions) into three time-periods: the Stone Age, the Bronze Age, and the Iron Age, [1] [2] although the concept may ...
The Detroit People Mover (DPM) is a 2.94-mile (4.73 km) elevated automated people mover system in Detroit, Michigan, United States. [3] The system operates in a one-way loop on a single track encircling downtown Detroit, using Intermediate Capacity Transit System linear induction motor technology developed by the Urban Transportation Development Corporation.
An arch is a curved vertical structure spanning an open space underneath it. [1] Arches may support the load above them, or they may perform a purely decorative role. As a decorative element, the arch dates back to the 4th millennium BC, but structural load-bearing arches became popular only after their adoption by the Ancient Romans in the 4th ...
Long Meg and Her Daughters is a Neolithic stone circle situated north-east of Penrith near Little Salkeld in Cumbria, North West England.One of around 1,300 stone circles in the British Isles and Brittany, it was constructed as a part of a megalithic tradition that emerged during Neolithic, and continued into the Early Bronze Age (circa 3200 - 2500BC). [1]
Bronze sculpture. The Victorious Youth (between 4th-2nd centuries BC), is a rare, water-preserved bronze from ancient Greece. Chinese ritual bronze, a Late Shang dǐng. Benin bronze of a woman's head. Gilt-bronze doors of the Baptistry of Florence Cathedral (Lorenzo Ghiberti, 1401–22). 9th-century bronze vessel in form of a snail shell ...
Crash bar. A crash bar (also known as a panic exit device, panic bar, or bump bar) [1][2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.
The disc was the centre of an exhibition entitled Der geschmiedete Himmel (German "The forged sky"), showing 1,600 Bronze Age artefacts, including the Trundholm sun chariot, shown at Halle from 15 October 2004 to 22 May 2005, from 1 July to 22 October 2005 in Copenhagen, from 9 November 2005 to 5 February 2006 in Vienna, from 10 March to 16 ...