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An early wheel made of a solid piece of wood. A wheel is a rotating component (typically circular in shape) that is intended to turn on an axle bearing. The wheel is one of the key components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating ...
The original Chicago Ferris Wheel and the Ferris wheel concept George Washington Gale Ferris Jr. (February 14, 1859 – November 22, 1896) was an American civil engineer . He is mostly known for creating the original Ferris Wheel for the 1893 Chicago World's Columbian Exposition .
The Halaf culture of 6500–5100 BCE has been credited with the earliest depiction of a wheeled vehicle, but this is doubtful as there is no evidence of Halafians using either wheeled vehicles or even pottery wheels. [1] One of the first applications of the wheel to appear was the potter's wheel, used by prehistoric cultures to fabricate clay pots.
New theory says wheel was first used by copper miners in Carpathian mountains around 3900BC
The first was the chain drive, originally used on tricycles, allowing a gear ratio to be chosen independent of the wheel size. The second was the pneumatic bicycle tire, allowing smaller wheels to provide a smooth ride. An 1880 penny-farthing (left), and the first modern bicycle, J. K. Starley's 1885 Rover safety bicycle (right)
According to John Peter Oleson, both the compartmented wheel and the hydraulic noria may have been invented in Egypt by the 4th century BC, with the Sakia being invented there a century later. This is supported by archeological finds at Faiyum , Egypt , where the oldest archeological evidence of a water-wheel has been found, in the form of a ...
The wheel may have been invented at several places, with early evidence found in Ukraine, Poland, Germany, and Slovenia. [4] [5] Evidence of wheeled vehicles appears from the mid 4th millennium BC near-simultaneously in the Northern Caucasus (Maykop culture), and in Central Europe.
The wheel, along with the wheel and axle mechanism, was invented in Mesopotamia (modern Iraq) during the 5th millennium BC. [5] The lever mechanism first appeared around 5,000 years ago in the Near East, where it was used in a simple balance scale, [6] and to move large objects in ancient Egyptian technology. [7]